It shouldn't matter assuming that your front end is pulling the values (AS DATETIMES) and putting them into a suitable container.There are 2 ISO standards that are not effected by the locale setting.They areShort Form : (YYYYMMDD)Long Form : (YYYY-MM-DDTHH:MM:SS.MS)you can use them and they will be the same regardless of the locale setting.exampleSELECT CONVERT(CHAR(11), CAST('2008-02-01' AS DATETIME), 106) -- Can Change , CONVERT(CHAR(11), CAST('20080201' AS DATETIME), 106) -- Consistent , CONVERT(CHAR(11), CAST('2008-02-01T12:00:00' AS DATETIME), 106) + ' ' + CONVERT(CHAR(11), CAST('2008-02-01T12:00:00' AS DATETIME), 108) -- Consistent , CONVERT(CHAR(11), CAST('2008-02-01 12:00:00' AS DATETIME), 106) + ' ' + CONVERT(CHAR(11), CAST('2008-02-01 12:00:00' AS DATETIME), 108) -- Can ChangeCharlie===============================================================Msg 3903, Level 16, State 1, Line 1736The ROLLBACK TRANSACTION request has no corresponding BEGIN TRANSACTION