Convert datetime value from one timezone to UTC timezone using sql query

Question

I have a datetime value. That datetime value may be in any timezone like \'Eastern Standard Time\' or \'India Standard Time\'. I want to convert that datetime value to UTC t

Answer 1

To convert to a time zone using the time zone name, you can do the following:

Find the number of minutes between the server timezone and your time zone

-- Change to your time zone name
declare @TimezoneName varchar(max) = 'New Zealand Standard Time'
declare @timezoneOffset bigint = Datediff( MINUTE, getdate() at time zone @TimezoneName, getdate() )

Use SWITCHOFFSET to give you the datetime in your timezone.

eg when getdate() is '2020-04-16 04:47:25.640' you get '2020-04-16 16:47:25.640 +12:00' (+12 for NZT)

select SWITCHOFFSET(getdate(), @timezoneOffset) 

This should work in SQL Server 2016 and above.