It is here to judge Yyyy-mm-dd in this format, basically taking into account the leap year and February, but I have forgotten where I found it.
^ ((1[6-9]| [2-9]\d) \d{2})-(0?[ 13578]|1[02])-(0?[ 1-9]| [12]\d|3[01]) | (((1[6-9]| [2-9]\d) \d{2})-(0?[ 13456789]|1[012])-(0?[ 1-9]| [12]\d|30)] | (((1[6-9]| [2-9]\d) \d{2}) -0?2-(0?[ 1-9]|1\D|2[0-8]) | (((1[6-9]| [2-9]\d) (0[48]|[ 2468][048]| [13579] [26]) | ((16| [2468] [048]| [3579] [26]) 00)) $ -0?2-29-)
The following is the addition of time verification
^ ((1[6-9]| [2-9]\d) \d{2})-(0?[ 13578]|1[02])-(0?[ 1-9]| [12]\d|3[01]) | (((1[6-9]| [2-9]\d) \d{2})-(0?[ 13456789]|1[012])-(0?[ 1-9]| [12]\d|30)] | (((1[6-9]| [2-9]\d) \d{2}) -0?2-(0?[ 1-9]|1\D|2[0-8]) | (((1[6-9]| [2-9]\d) (0[48]|[ 2468][048]| [13579] [26]) | ((16| [2468] [048]| [3579] [26]) 00)) ( -0?2-29-)) (20|21|22|23|[ 0-1]?\d): [0-5]?\d:[0-5]?\d$