Top "Dst" questions

Daylight saving time and time zone best practices

I am hoping to make this question and the answers to it the definitive guide to dealing with daylight saving …

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How to check if DST (Daylight Saving Time) is in effect, and if so, the offset?

This is a bit of my JS code for which this is needed: var secDiff = Math.abs(Math.round((utc_…

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Determine Whether Daylight Savings Time (DST) is Active in Java for a Specified Date

I have a Java class that takes in the latitude/longitude of a location and returns the GMT offset when …

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Does UTC observe daylight saving time?

I am trying to write a script where i want to convert any timezone to UTC and reverse. But from …

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Converting Between Local Times and GMT/UTC in C/C++

What's the best way to convert datetimes between local time and UTC in C/C++? By "datetime", I mean some …

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PHP daylight saving time detection

I need to send an email to users based wherever in the world at 9:00 am local time. The server is …

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Convert UTC DateTime to another Time Zone

I have a UTC DateTime value coming from a database record. I also have a user-specified time zone (an instance …

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Is it always a good idea to store time in UTC or is this the case where storing in local time is better?

Generally, it is the best practice to store time in UTC and as mentioned in here and here. Suppose there …

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How to create Daylight Savings time Start and End function in SQL Server

I need to create a function in SQL server that returns daylight savings time start datetime and daylight savings time …

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Check if daylight savings is in effect?

How to check if in Denmark daylight time savings has taken effect, if so, then add 1 hour to my data, …

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