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How can I detect day light savings automatically in PHP?
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Today, most Americans spring forward (turn clocks ahead and lose an hour) on the second Sunday in March (at 2:00 A.M.) and fall back (turn clocks back and gain an hour) on the first Sunday in November (at 2:00 A.M.). See how your sunrise and sunset times will change with our Sunrise/set Calculator.
Clocks Back or Forward? “Spring forward, fall back” is one of the little sayings used to remember which way to set your watch. You set your clock forward one hour in the spring when DST starts (= lose 1 hour), and back one hour when DST ends in the fall (= regain 1 hour).
Outside of Europe and North America, changing the clocks is also practiced in Iran, most of Mexico, Argentina, Paraguay, Cuba, Haiti, the Levant, New Zealand and parts of Australia. This chart shows countries and regions which practice time change (daylight savings) and those who have done so in the past.
For SQL Server 2016+, you can use AT TIME ZONE. It will automatically handle the day light saving times.
echo date('I'); The I (capital i) is a 1/0 denoting whether or not daylight saving is currently in effect.
http://php.net/manual/en/function.date.php
hope it helps.
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