如何按照用户时区更改日期和时间

Question

I do have a requirement such as say if there is 8:00 am (Fri) in Chicago so the same time would be In Singapore as 9:00 pm (Fri) as the day remains the same but if the timing in Chicago is 8:00 pm (Fri) the same timing would be in Singapore as 9:00 am (Sat).

The date change I am able to do by using the following function in SQL

dateadd(mi, 840, dateadd(hh, -1, '2015-01-30 08:00:00.000')

Where 840 is offset timing for Singapore and -1 is tzAdjust and 2015-01-30 08:00:00.000 is Datetime in Chicago But how to convert the day as above I am not getting that.

Answer 1

Does something like this work?

DECLARE
     @TimeHere DATETIME2(3)
    ,@OffsetMinutes INT

SELECT
     @TimeHere = GETDATE()
    ,@OffsetMinutes = 840

SELECT
    DATEADD(MINUTE,@OffsetMinutes,@TimeHere)    AS TimeThere