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Ephedra is a genus of gymnosperm shrubs, the only genus in the family Ephedraceae and order Ephedrales. These plants occur in dry climates over a wide area mainly in the Northern Hemisphere, across southern Europe, north Africa, southwest and central Asia, southwestern North America, and, in the Southern Hemisphere, in South America south to Patagonia. They are also called Joint-pine, Jointfir, or Mormon-tea. The Chinese name is 麻黄, ma huang, which means "yellow hemp". Ephedra is also sometimes called sea grape (from the French raisin de mer), although that is also a common name for Coccoloba uvifera.
The following list of species is from the Gymnosperm Database page for Ephedra.
These plants have traditionally been used by indigenous people for a variety of medicinal purposes, and are a likely candidate for the Soma plant of Indo-Iranian religion. The alkaloids ephedrine and pseudoephedrine are the active constituents of the plant. Some species in the Ephedra genus have zero alkaloid content and are therefore essentially inert, however the most commonly used species, E. sinica, has a total alkaloid content of 1-3% by dry weight. Ephedrine constitues 40-90% of the alkaloid content, with the remainder consisting of pseudoephedrine and the demethylated forms of each [1]. Ephedrine is considered a performance-enhancing drug and is prohibited in most competitive sports.
Beginning in the 1990s, concerns about the safety of Ephedra and Ephedra-based products began to be publicly raised. As Ephedra is a herb, products containing it were marketed as dietary supplements and therefore were exempt from FDA regulation in the United States. Ephedra was found in many popular weight control products, some of which the FDA believed may be hazardous. Sympathomimetic amines such as ephedrine raise heart rate and blood pressure and can be particularly hazardous to those with pre-existing cardiac problems.
According to the FDA, 155 deaths can be blamed on Ephedra, most of them related to cardiac problems and strokes. However, many advocates of Ephedra maintain that it is safe when used as directed, and continue to regard it as a dietary supplement rather than as a drug. Critics maintain, however, that there is anecdotal evidence that the use of Ephedra can cause tolerance and dependence. Health food store GNC banned ephedra-containing products in June 2003, and the National Football League banned players from using it as a dietary supplement in 2001.
On December 30, 2003, the US Food and Drug Administration announced a ban (effective from 12 April 2004) on the uncontrolled sale of supplement products containing Ephedra, citing "an unreasonable risk of illness or injury" from the use of the drug. Synthetic ephedrine is still available as an ingredient in some over the counter (OTC) medications that are clearly labeled in accordance with FDA regulations. Bulk ephedra herb (such as that used in traditional Chinese medicine) not specifically marketed for human consumption is not under the jurisdiction of the FDA and is therefore unaffected. Several states have enacted their own laws regarding the sale of ephedra and ephedra-based products, some stricter than the non-statutory FDA regulation.
On 14 April 2005, this ban was struck down on procedural grounds by Utah federal judge Tena Campbell [2]. However, as of July 2005, diet supplement manufacturers, including the very company that challenged the ephedra ban in court, are still reluctant to reintroduce ephedra into their product lines.
In the 1994 FIFA World Cup, the Argentine footballer Diego Armando Maradona tested positive for ephedrine in a doping control for using one dietary supplement product containing the substance.
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In the 1994 FIFA World Cup, the Argentine footballer Diego Armando Maradona tested positive for ephedrine in a doping control for using one dietary supplement product containing the substance. Nevertheless, the form "daylight savings time" appears without remark as to its nonstandardness in some dictionaries, including The American Heritage Dictionary. However, as of July 2005, diet supplement manufacturers, including the very company that challenged the ephedra ban in court, are still reluctant to reintroduce ephedra into their product lines. Most compound adjectives are joined with a hyphen, but "daylight-saving time," too, is nonstandard. On 14 April 2005, this ban was struck down on procedural grounds by Utah federal judge Tena Campbell [2]. In the standard form of the name, "daylight saving" is a compound adjective (part of which is a participle) that modifies "time." A common variant is daylight savings time. Although this alternate form is frequently heard in speech, it is nonstandard and appears rarely in edited writing. Several states have enacted their own laws regarding the sale of ephedra and ephedra-based products, some stricter than the non-statutory FDA regulation. This is especially important in autumn, just before the heating season causes an increase in home fires. Bulk ephedra herb (such as that used in traditional Chinese medicine) not specifically marketed for human consumption is not under the jurisdiction of the FDA and is therefore unaffected. For example, the Country Fire Authority of Victoria in Australia has been running a program called "Change Your Clock, Change Your Smoke Alarm Battery" for several years. Synthetic ephedrine is still available as an ingredient in some over the counter (OTC) medications that are clearly labeled in accordance with FDA regulations. Fire safety officials in Australia, Canada, New Zealand, and the United States encourage citizens to use the two annual time changes as a reminder to check the batteries in home and office fire alarms and smoke detectors. On December 30, 2003, the US Food and Drug Administration announced a ban (effective from 12 April 2004) on the uncontrolled sale of supplement products containing Ephedra, citing "an unreasonable risk of illness or injury" from the use of the drug. Another common mnemonic of equal meaning is "spring ahead, fall behind.". Health food store GNC banned ephedra-containing products in June 2003, and the National Football League banned players from using it as a dietary supplement in 2001. This uses the word "fall" to mean "autumn"; while this usage has died out in British English, it is still very common in North American English. Critics maintain, however, that there is anecdotal evidence that the use of Ephedra can cause tolerance and dependence. The mnemonic "spring forward, fall back" tells us how to reset clocks when the time changes, regardless of hemisphere (although it has to be remembered that spring and autumn occur during different months in the northern and southern hemispheres). However, many advocates of Ephedra maintain that it is safe when used as directed, and continue to regard it as a dietary supplement rather than as a drug. Different people start their day at different times (office workers start their day later than factory workers, who start their day later than farm workers), regardless of daylight saving time. According to the FDA, 155 deaths can be blamed on Ephedra, most of them related to cardiac problems and strokes. Other critics suggest that DST is, at its heart, government paternalism and that people rise in the morning as a matter of choice because many people enjoy nighttime hours and their jobs do not require them to make the most of daylight. Sympathomimetic amines such as ephedrine raise heart rate and blood pressure and can be particularly hazardous to those with pre-existing cardiac problems. DST is particularly unpopular among people working in agriculture because the animals do not observe it, and thus the people are placed out of synchronization with the rest of the community, including school times, broadcast schedules, and the like. Ephedra was found in many popular weight control products, some of which the FDA believed may be hazardous. Opponents point to the longer hours of darkness on winter mornings, especially in Scotland, the north of England and Northern Ireland which might well cause an increase in road accidents. As Ephedra is a herb, products containing it were marketed as dietary supplements and therefore were exempt from FDA regulation in the United States. This would make winter evenings longer, thereby reducing traffic accidents and cases of seasonal affective disorder. Beginning in the 1990s, concerns about the safety of Ephedra and Ephedra-based products began to be publicly raised. Alternatively, some would like Britain to adopt Central European Time and jump forward another hour during the summer (adopting a Single/Double Summer Time from Britain's perspective). Ephedrine is considered a performance-enhancing drug and is prohibited in most competitive sports. Some campaigners in Britain would like the country to stay on British Summer Time (BST) all year round, or in other words, adopt Central European Time and abolish BST. Ephedrine constitues 40-90% of the alkaloid content, with the remainder consisting of pseudoephedrine and the demethylated forms of each [1]. Some studies do show that changing the clock increases the traffic accident rate.[1] Following the spring shift to daylight saving time (when one hour of sleep is lost) there is a measurable increase in the number of traffic accidents that result in fatalities. sinica, has a total alkaloid content of 1-3% by dry weight. For example, during a North American time change, an autumn night where clocks are reset from 3 AM summer to 2 AM winter time, times between 2AM and 3AM will occur twice, causing confusion in transport schedules, payment systems, etc. Some species in the Ephedra genus have zero alkaloid content and are therefore essentially inert, however the most commonly used species, E. No formal studies have been performed, but an enormous amount of time has been spent by software developers to deal with the fact that 2400 hours past 2pm is not necessarily 2pm 100 days later. The alkaloids ephedrine and pseudoephedrine are the active constituents of the plant. It is also speculated that one of the benefits—more afternoon sun—would also actually increase energy consumption as people get into their cars to enjoy more time for shopping and the like. These plants have traditionally been used by indigenous people for a variety of medicinal purposes, and are a likely candidate for the Soma plant of Indo-Iranian religion. It was for this reason that Arizona rejected DST and opted to stay on standard time all year. The following list of species is from the Gymnosperm Database page for Ephedra. Air conditioning often uses more energy than artificial lighting. Ephedra is also sometimes called sea grape (from the French raisin de mer), although that is also a common name for Coccoloba uvifera. When air conditioning was not widely available, the change did save energy; however, air conditioning is much more widespread now than it was several decades ago. The Chinese name is 麻黄, ma huang, which means "yellow hemp". While many people use more sunlight under DST, most people also experience more heat, which prompts many people to turn on the air conditioner during the warmer afternoon hours. They are also called Joint-pine, Jointfir, or Mormon-tea. There is also a question whether the decrease in lighting costs justifies the increase in summertime air conditioning costs. These plants occur in dry climates over a wide area mainly in the Northern Hemisphere, across southern Europe, north Africa, southwest and central Asia, southwestern North America, and, in the Southern Hemisphere, in South America south to Patagonia. It is also noted that much effort is spent reminding everyone twice a year of the change, and thousands are inconvenienced by showing up at the wrong time when they forget. Ephedra is a genus of gymnosperm shrubs, the only genus in the family Ephedraceae and order Ephedrales. The disruption in sleep patterns associated with setting clocks either forward or backward correlates with a spike in the number of severe auto accidents, as well as lost productivity as sleep-disrupted workers adjust to the schedule change. Ephedra viridis Coville - Green Ephedra, Green Mormon-tea. Opponents claim that there is not enough benefit to justify the need to adjust clocks twice every year. - Longleaf Ephedra, Longleaf Jointfir, Longleaf Mormon-tea, Popotilla, Teposote. DST is not universally accepted; many localities do not observe it. Ephedra trifurca Torrey ex S.Wats. (Stats from this article). - Torrey's Ephedra, Torrey's Jointfir, Torrey's Mormon-tea, Cañutillo. $28 million in traffic costs. Ephedra torreyana S.Wats. went on extended DST in 1974 and 1975 in response to the 1973 energy crisis, Department of Transportation studies found that observing DST in March and April saved 10,000 barrels of oil a day, and prevented about 2,000 traffic injuries and 50 fatalities saving about U.S. Ephedra sinica Stapf - Ma Huang, Chinese ephedra. When the U.S. Ephedra saxatilis (Stapf) Royle ex Florin. Other benefits cited include prevention of traffic injuries (by allowing more people to return home from work or school in daylight), and crime reduction (by reducing people's risk of being targets of crimes that are more common in dark areas). Ephedra regeliana Florin - Xi Zi Ma Huang. Most people plan outdoor activities during the increased hours of sunlight. & Bobr.) C.Y.Cheng. Another perceived benefit of DST is increased opportunities for outdoor activities. kaschgarica (B.Fedtsch. During the summer most people would wake up after the sun rises, regardless of whether daylight saving time is in effect or not, so there is no increased need for morning lighting to offset the afternoon drop in energy usage. Ephedra przewalskii var. Part of the reason that it is normally observed in the late spring, summer, and early autumn is because during the winter months the amount of energy saved by moving sunset one hour later is negated by the increased need for morning lighting by moving sunrise by the same amount. Ephedra przewalskii Stapf
ex S.Wats. Theoretically, the amount of residential electricity needed in the evening hours is dependent both on when the sun sets and when people go to bed. Ephedra pedunculata Engelm. One of the major reasons given for observing DST is energy conservation. - Nevada Ephedra, Nevada Jointfir, Nevada Mormon-tea. Starting and ending dates are variable: normally, Brazilian DST starts at 00:00 on an October (rarely November) Sunday and ends at 00:00 on a February Sunday. Ephedra nevadensis S.Wats. Brazil adopted DST for the first time in 1931, but uninterruptedly since 1985 in southern states (south, southeast regions and states of Goiás and Mato Grosso do Sul). Ephedra monosperma C.A.Meyer Ephedra viridis in western Nevada . In specific years the starting and ending dates have been modified for political or climatic reasons. Ephedra minuta Florin. The current law which affects the entire country was enacted in 1970, but it had observed the practice as early as 1927 when the country had been divided into two distinct time zones. procera Fischer & C.A.Meyer. Chile switches to DST at 24:00 on the second Saturday in October and reverts to Local Standard Time (LST) at 24:00 on the second Sunday the following March. Ephedra major subsp. Standard Time Zone Boundary in the State of Indiana (a 139 KB pdf file) has some history, public comments from each county, the final DOT determination, and the resulting time zone boundary. Ephedra major Host
Ephedra intermedia Schrenk ex C.A.Meyer. On April 29, 2005, the Indiana legislature voted to begin observing daylight saving time statewide in 2006. Ephedra gerardiana Wallich ex C.A.Meyer - Gerard's Jointfir, Shan Ling Ma Huang. From 1991 until April 1, 2006 the state had three kinds of time zones and DST observances:. Ephedra funerea Coville & Morton - Death Valley Ephedra, Death Valley Jointfir. Opponents claimed that daylight saving time created costs and inconvenience associated with changing clocks twice a year and had little or no real value. Ephedra frustillata Miers - Patagonian Ephedra. Some supporters claimed that some businesses had located out-of-state due to the time-related confusion. & Graebn. Being out of sync with neighboring states and the national changing of clocks, supporters argued, had a negative economic impact on the state. campylopoda (C.A.Meyer) Aschers. In the past, neighboring communities sometimes ended up one or even two hours apart. Ephedra fragilis subsp. DST has been a long-standing controversy in Indiana, not only as an agricultural state, but also because the border separating the Eastern and Central time zones divides the state. Ephedra fragilis Desf.
Ephedra fedtschenkoae Pauls. However, the large Navajo Indian Reservation within it does. - Arizona Ephedra, Arizona Jointfir, Desert Mormon-tea. Most of Arizona does not observe DST. Ephedra fasciculata A.Nels. Certain types of information systems (those that schedule future events with reference to UTC, for example) are almost guaranteed to encounter serious desynchronization problems unless both computers and databases are carefully updated—in some cases by hand. Ephedra equisetina Bunge - Ma huang. More difficult to quantify is the amount of labor and money that may be spent correcting errors that arise due to a failure to update computers. & Graebn. A two-minute procedure for updating a computer, multiplied by a hundred million computers, represents nearly 1700 years of full-time labor. helvetica (C.A.Meyer) Aschers. In order to change the dates and times at which the automatic jump to or from DST occurs, these tables must be modified, which requires some sort of manual intervention by a human being in the great majority of cases. Ephedra distachya subsp. Most computers are programmed to adjust automatically for DST, but they do so based on static tables stored directly on the computer itself. - Joint-pine, Jointfir
Ephedra distachya L. The extension was greeted by criticism from the airline industry and those concerned for the safety of children traveling to school in the dark before the late sunrise. Ephedra cutleri Peebles - Navajo Ephedra, Cutler's Ephedra, Cutler Mormon-tea, Cutler's Jointfir. (See this article, for example.). Ephedra coryi E.L.Reed - Cory's Ephedra. There is very little recent research on what the actual positive effects, if any, might be. - California Ephedra, California Jointfir. Department of Energy information from the 1970s, the accuracy and relevance of which the DoE no longer stands by. Ephedra californica S.Wats. Proponents claimed that the extension would save "the equivalent of" 10,000 barrels of oil per day, but this figure was based on U.S. - Boundary Ephedra, Pitamoreal. The change was introduced by the Energy Policy Act of 2005; the House had originally approved a motion that would have extended DST even further. ex S.Wats. Starting March 11, 2007, daylight saving time will be extended another four to five weeks, from the second Sunday of March to the first Sunday of November. Ephedra aspera Engelm. In response to the 1973 energy crisis, daylight saving in the United States was begun earlier in both 1974 and 1975, commencing on the first Sunday in January (January 6) in the former year and the last Sunday in February (February 23) in the latter. ex C.A.Meyer - Clapweed, Erect Ephedra. The law was amended again in 1986 to begin daylight saving time on the first Sunday in April, to take effect the following year. Ephedra antisyphilitica Berl. The law was amended in 1972 to permit states that straddle a time zone boundary to exempt the entire area of the state lying in one time zone. Ephedra altissima Desf. Any state that wanted to be exempt from daylight saving time could do so by passing a state law, provided that it exempt the entire state. Ephedra alata Decne. federal Uniform Time Act of 1966 mandated that daylight saving time begin nationwide on the last Sunday of April and end on the last Sunday of October. The U.S. This resulted in a patchwork where some areas observed DST while adjacent areas did not, and it was not unheard of to have to reset one's clock several times during a relatively short trip (e.g., bus drivers operating between Moundsville, West Virginia, and Steubenville, Ohio had to reset their watches seven times over 35 miles). States and localities were free to observe daylight saving time or not. federal law did not address daylight saving time. From 1945 to 1966, U.S. This remained in effect until World War II began winding down and the requirement was removed on September 30, 1945. Daylight saving time was reinstated in the United States on February 9, 1942, again as a wartime measure to conserve resources. Beginning in 2007, it will start DST on the second Sunday in March, and change back to standard time on the first Sunday in November. Through the end of 2006, the United States starts its DST on the first Sunday in April, and changes back to standard time on the last Sunday in October. state of Arizona, which also does not observe DST. The Mexican state of Sonora does not observe DST because it borders on the U.S. Mexico has adopted DST nationwide, even in its tropical regions, because of its increasing economic ties to the United States. Since April 2004, Cuba has remained on DST. Cuba always starts its DST on April 1 but the end date varies. Saskatchewan Government Relations gives further details on Saskatchewan's time policies. Lloydminster and its immediately surrounding region in Saskatchewan use the same timekeeping routine used by Alberta, DST with Mountain Standard Time. The charter of the city of Lloydminster, which is bisected by the Saskatchewan–Alberta border, gives it a special exception (among areas in Saskatchewan) to use DST. Observationally, this is equivalent to the province being on Mountain Daylight Time year-round, though officially the province is considered to be part of the Central time zone. (This policy was implemented when the Saskatchewan Time Act was passed in 1966, to solve the problems that arose when time zones varied from town to town.) Thus, in the summer months Saskatchewan is in sync with Mountain Daylight Time and in the winter months it is in sync with Central Standard Time. Saskatchewan is bisected by 105° west meridian, the central meridian of the Mountain Standard Time Zone (UTC−7), yet clocks are kept at UTC−6 all year long. The province of Saskatchewan is the largest part of that country that does not use DST, that is, it does not adjust clocks in spring and fall. The remaining provinces and territories will continue change time on the first Sunday of April and last Sunday of October unless they change their legislation. In 2007, their DST will start on the second Sunday of March, and return to standard time on the first Sunday in November. rules (The Calgary Sun). The governments of Ontario, Manitoba, Quebec, and Alberta have pledged to change their daylight saving rules to match the new U.S. In Canada, time is under provincial and territorial jurisdiction, not federal. Also, in 1988, they experimented with Double Daylight Time, when the clocks went ahead by two hours, instead of the usual one hour. The Canadian province of Newfoundland and Labrador is an exception in that the time changes take place at 00:01 local standard time and 00:01 local daylight time respectively. In 2007, the starting and ending dates for DST will change in the United States and parts of Canada (see below). North America generally follows the same procedure, going by local time in each zone, each time zone switching at 02:00 LST (local standard time) to 03:00 LDT (local daylight time) on the first Sunday in April, and again from 02:00 LDT to 01:00 LST on the last Sunday in October. Polar or near-polar locations such as Iceland often opt out, as summer in these locations usually brings nearly uninterrupted daylight. With Iceland observing UTC all year round, despite being at a longitude which would indicate UTC-1, the country may be said to be on continuous DST. Thus in Moscow (local time = UTC+3 in winter, UTC+4 in summer), daylight-saving time commences at 23:00 UTC on the day before the last Sunday in March, and ends at 23:00 UTC on the day before the last Sunday in October. In Russia, however, although the changeover dates are the same, clocks are moved forward or back at 02:00 winter time in all zones. (See also: European Summer Time). from local times of 01:00/02:00/03:00 to 02:00/03:00/04:00 in March, and vice versa in October. In the West European (UTC), Central European (UTC+1), and East European (UTC+2) time zones the change is simultaneous: on both dates the clocks are changed everywhere at 01:00 UTC, i.e. All countries in Europe, except Iceland as noted below, observe daylight-saving time and change on the same date: moving clocks forward one hour on the last Sunday in March and back one hour on the last Sunday in October. The Department of Internal Affairs gives further historical information on their website. In New Zealand, daylight saving time begins at 2am (standard time) on the first Sunday in October each year, and ends at 2am (standard time) on the third Sunday of March. See the Australian time zones article or this site for maps and further information on standard and daylight saving time in Australia. Queensland experimented with it for a year or two in the early 1970s, but it was not popular and was abandoned. Western Australia, Northern Territory and Queensland do not have daylight saving. Tasmania starts DST earlier than the others, usually near the beginning of October. New South Wales, Victoria, Tasmania, Australian Capital Territory and South Australia apply daylight saving time. Some states/territories implement it and some do not. In Australia, daylight saving time is a state/territory-based initiative. It has not used DST since then. Pakistan experimented with DST in 2002 going from +5:00 to +6:00. For more on this subject, see Israeli Daylight Saving Law. Israel's Daylight Saving Time rules have changed repeatedly in recent years; there has been trouble reaching a consensus regarding Gregorian calendar end dates for DST as they are dependant on Jewish Holidays, which follow the lunar Hebrew calendar. Israel adopts Daylight Saving Time on the last Friday before April 2 at 02:00, and returns to standard time at 02:00 of the Sunday of the month of Tishrei between Rosh Hashanah and Yom Kippur. Thus, DST in Iran starts on the first day of Farvardin (around 21-22 March) and ends on the first day of Mehr (around 22 September). Iran uses the Persian calendar. India used DST briefly during its wars with Pakistan and China. The PRC now uses one universal time zone for all of the nation from Urumqi in the northwest to Fujian in the southeast; the size of the nation was a major factor why DST was not considered practical in China. The People's Republic of China experimented with DST from 1986, but abandoned it in the 1990s. Egypt operates Daylight-Saving Time between the last Friday in April and the last Thursday in September when the clocks are 3 hours ahead of Greenwich Mean Time (GMT+3). In the Southern Hemisphere, the beginning and ending dates are switched (thus the time difference between, e.g., the United Kingdom and Chile may be three, four, or five hours). DST commonly begins in the Northern Hemisphere on either the first Sunday in April or the last Sunday in March, and ends on the last Sunday in October. With a few exceptions, switchovers between standard time and daylight saving time generally occur in the early morning hours of a Sunday morning, presumably because doing so then causes less disruption than a change on a weekday would. The dates of the beginning and ending of DST also vary by country. The amount of the time shift varies, but one hour is the most common. state in the tropics, does not observe DST. Hawaii, the only U.S. Daylight saving time is generally a temperate zone practice; day lengths in the tropics do not vary enough to justify DST. The law, however, proved so unpopular (mostly because people rose and went to bed earlier than in current times) that the law was later repealed. It was observed for seven months in 1918 and 1919. Congress established several time zones (which were already in use by railroads and most cities since 1883) and made daylight saving time official (which went into effect on March 31) for the remainder of World War I. Then on March 19, 1918, the U.S. Shortly afterward, the United Kingdom followed suit, first adopting DST between May 21 and October 1, 1916. The idea of daylight saving time was first put into practice by the German government during the First World War between April 30 and October 1, 1916. It was first seriously proposed by William Willett in the "Waste of Daylight", published in 1907, but he was unable to get the British government to adopt it despite considerable lobbying. (Read the full text.) However, the article was humorous; Franklin was not proposing DST, but rather that people should get up and go to bed earlier. It is sometimes asserted that DST was first proposed by Benjamin Franklin in a letter to the editors of the Journal of Paris. . Note that the term commonly used in the United States, daylight savings time, is incorrect, for both historic (the correct name as provided by the act which inaugurated it in the United States is daylight saving time) and grammatical reasons. DST is most commonly used in temperate regions, due to the considerable variation in the amount of daylight versus darkness through the seasons in those regions. This is intended to provide a better match between the hours of daylight and the active hours of work and school. The official time is adjusted forward, (usually) one hour from its official standard time, remaining that way for the duration of the spring and summer months. Daylight saving time (also called DST) is a term used for a system intended to "save" daylight (It is also known as summer time in both Britain and Europe). American Journal of Public Health 85, 92–95. (1995) Daylight saving time and motor vehicle crashes: the reduction in pedestrian and vehicle occupant fatalities. et al. ^ Ferguson, S.A. Their observance of DST was unofficial in this case, as a strict reading of the Uniform Time Act would not allow for this situation, but by observing DST, they remained synchronized with the greater Louisville and Cincinnati metropolitan areas. 2 counties near Cincinnati, Ohio and 3 counties near Louisville, Kentucky were on Eastern Standard time but did observe DST. 5 northwestern counties near Chicago, Illinois and 5 southwestern counties near Evansville, Indiana were on Central Standard Time and did use DST. 77 counties — most of the state — were on Eastern Standard Time but did not use DST. |