Tom.Thomson (8/10/2011)
. . .Not in most countries except Britain (note single t), in all countries including Britain. Datetime2 uses the Gregorian calendar, not any other calendar, so it is not a locale dependent type.
Hmm... maybe it is not quite Gregorian. If you run this, --
DECLARE @type2 DATETIME2(7) = '1582-10-10';
PRINT DATEPART( dw, @type2 );
you will get 1, i.e., Monday, but that is wrong because there was no October 10 in 1582.