, CAST(cast(add_months(sysdate,6) as timestamp) AT TIME ZONE 'Canada/Saskatchewan' as timestamp) local_time from dual , extract(timezone_abbr from cast(add_months(sysdate,6) as timestamp) AT TIME ZONE 'Canada/Saskatchewan') tz_abbrv , CAST(cast(add_months(sysdate,6) as timestamp) AT TIME ZONE 'Canada/Central' as timestamp) local_time from dual , extract(timezone_abbr from cast(add_months(sysdate,6) as timestamp) AT TIME ZONE 'Canada/Central') tz_abbrv To illustrate, in Canada, there is central standard time, but the province of Saskatechewan does not use daylight savings, so if I want to convert right now to local time in summer where daylight savings is in play, and knowing the correct fully specified timezone names in the DB Timezone file (You can check the list installed in your DB by select * from V$TIMEZONE_NAMES ): SELECT 'Central' locale To do that you need to use the fully specified timezone name. some states in the US are split between two time zones.The three-character timezones don't adjust for daylight savings. using our time zone converter) instead of relying on time zone abbreviations as there are sometimes exceptions, e.g. It is always advisable to check the exact location (e.g. Most locations in Central Standard Time observe summer time between March and November, then calling it CDT – Central Daylight Time. US: Nebraska, Wisconsin, Alabama, Arkansas, Louisiana, Texas, Illinois to mention a few. Mexico: México (including Mexico City), Oaxaca, Yucatán, San Luis Potosi, Chiapas and more.Ĭanada: Saskatchewan (only Creighton and Denare Beach), Manitoba and most ports of Ontario Example of states observing Central Standard Time: With the exception of the North West corner, all of Mexico observes CST. Similarly, only Canadian provinces in the middle of the country observe CST.
In the US it is only the states in the central parts that observes CST, from Wisconsin in the West to Tennessee in the East, and from Michigan in the North to Florida in the South. It is important to remember that not all locations in a given state or province necessarily use the time zone – make sure to check the situation for your exact location! Countries observing CST:ĬST is observed in the US, Canada, Mexico and all of Central America (including Belize, Costa Rica, Guatemala, El Salvador, Nicaragua, Panama and Honduras). In the summer CST becomes CDT – Central Daylight Time. It is six hours behind UTC and is observed during the winter months. CEST is observed between the last Sunday of March and the last Sunday of October.Ĭentral Standard Time is the time zone of the central US and Canada, as well as Mexico and most of Central America.
CET in that case becomes CEST – Central European Summer Time and is one hour different.
Daylight saving time and summer time:ĭaylight Saving Time is applied in Central Europe/Western Europe. The list is long but includes Berlin, Oslo, Madrid, Rome, Tirana, Amsterdam, Paris, Warsaw, Bern, Geneva and Copenhagen. Example of cities observing Central European Time: This includes Germany, Sweden, Italy, Spain, Croatia, Montenegro and Gibraltar to name a few. Countries using CET:Īll countries in Western Europe, except Portugal and the UK, observe Central European Time.
Note that Portugal and the UK are not on CET but instead observe GMT and that Eastern Europe (every country from Finland and South) observe Eastern European Time. In practice, “Central” means “Western” as Central European Time includes everything from the Nordics to Spain. Important to note is that in summer Central European Time becomes CEST, which stands for Central European Summer Time. CET is, as the name implies, the time zone for Central Europe.
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