US convention !
1> insert into t values('2003/03/15 00:00:22')
2> go
(1 row affected)
1> insert into t values('03/15/2003 00:00:22')
2> go
(1 row affected)
1> insert into t values('15/03/2003 00:00:22')
2> go
Msg 247, Level 16, State 1:
Server 'ASE125', Line 1:
Arithmetic overflow during implicit conversion of VARCHAR value '15/03/2003 00:00:22' to a DATETIME field .