SQL Server 2017

By using db<>fiddle, you agree to license everything you submit by Creative Commons CC0.

DECLARE @a DATETIME;
SET @a = '0001/1/1 12:00:00';
Msg 242 Level 16 State 3 Line 2
The conversion of a varchar data type to a datetime data type resulted in an out-of-range value.

DECLARE @b DATETIME;
SET @b = '1752/1/1 12:00:00';
Msg 242 Level 16 State 3 Line 2
The conversion of a varchar data type to a datetime data type resulted in an out-of-range value.

DECLARE @c DATETIME;
SET @c = '1753/1/1 12:00:00';