DST per country [src](https://en.wikipedia.org/wiki/Daylight_saving_time_by_country) |
**USA - Eastern Time (ET)** |
DST Begins Second Sunday in March at 02:00 UTC (called Eastern Daylight Time (**EDT**) UTC-04:00) DST Ends First Sunday in November at 02:00 UTC (called Eastern Standard Time (**EST**) UTC-05:00) |
**European Countries** (GR / CY / CZ / NL / LU / MT / NO / PL / PT / RO / RS / SK / SI / SP / CH / SE / UA / UK etc.) |
DST Begins Last Sunday of March at 01:00 UTC (aka in UK called British Summer Time (**BST**) In Ireland, called Irish Standard Time (**IST**)) DST Ends Sunday of October at 01:00 UTC Central European Summer Time (**CEST**) is 2 hours ahead of UTC, european countries using CEST in the summer and **CET** in the winter. Also known as **CEDT** – Central European Daylight Time, **ECST** – European Central Summer Time Eastern European Summer Time (**EEST**) is 3 hours ahead of Coordinated Universal Time (UTC). This time zone is a Daylight Saving Time zone and is used in: Europe, Asia. |
**African Countries** (except Morocco / Western Sahara) - Does not observe DST |
**Asian Countries** (except Iran / Israel / Jordan / Lebanon / Syria) - Does not observe DST India Standard Time (**IST**) is always UTC+05:30 |
**Oceanian Countries** (except Australia / Fiji / New Zealand / Samoa) - Does not observe DST |
Australia |
DST Begins First Sunday of October at 02:00 UTC (aka **AEDT** (Eastern Daylight Time)) UTC +11 DST Ends First Sunday of April at 02:00 UTC (aka **ACDT** (Central Daylight Time)) UTC +10.5 |
**All of the below is 1 hour ahead of UTC [src](https://www.timeanddate.com/time/zones/wst-africa)** |
A – Alpha Time Zone WAT – West Africa Time WEST – Western European Summer Time WST – Western Sahara Summer Time |
No listed here ? try timeanddate
USA.Department of Labor - Fair Labor Standards Act Hours Worked Advisor
reddit - Working a night shift when time changes
Online Tools
https://www.worldtimebuddy.com/
https://timee.io/
http://www.onlineconversion.com/unix_time.htm
https://www.calculator.net/date-calculator.html
#UTC #DST #EST #EDT #BST #IST #CEST #CET #CEDT #ECST #EEST #WAT #WEST #WST
origin - http://www.pipiscrew.com/?p=13044 daylight-saving-time-by-country