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All Forums  General SQL Server Forums  New to SQL Server Programming  Determine UTC from specific local datetime

Author  Topic  omnis092 Starting Member 1 Post Posted - 2013-03-21 : 13:52:40 Let me start by listing the constraints I'm working under: - I have read-only access to the database - I am working in Crystal Reports, using the custom SQL command functionality - SQL server 2008 - Crystal v11 / 2005 I have the need to determine a UTC datetime given a specific local datetime. For instance: - Given 2/28/13 1:00 AM local (-5 offset) the UTC would be 2/28/13 6:00 AM. My problem is I do not know the offset and cannot figure a way out to calculate it for a specific datetime. The current offset is easy...a datediff from a getdate and getUTCdate, but that gives you the wrong offset depending on the datetime. For instance right now for New York the offset is -4 because we're in daylight saving time, so if I use the getdate/getUTCdate difference I'll get 4, but if I apply that to say...2/28, I'll get the wrong UTC date because on 2/28 the offset was -5 (not daylight saving). I cannot do this at the app (crystal) level due to the dataset I require, so I'm stuck with a SQL query, and I cannot write a store procedure or function because I have read-only access. Anyone have any idea how I can accomplish this?