regex to validate dateformat from url and otherwise

I need a regex, that validates this 2 patterns:

yyyy-MM-dd HH:mm:ss

and

yyyy-MM-dd%20HH:mm:ss

the second one is for Get parameters of a url.. thats why there is a %20 in there.

Edit:

I tired this one:

^\d{4}\/([0]\d|[1][0-2])\/([0-2]\d|[3][0-1])(\s([0]\d|[1][0-2])(:[0-5]\d){1,2})*\s*([aApP][mM]{0,2})?$

but it does not work

>Solution :

[0-9]{4}-[0-9]{2}-[0-9]{2}(?:%20| )[0-9]{2}:[0-9]{2}:[0-9]{2}

This’ll work if you’re in JavaScript.

You can also place the separate parts in capture groups and check them if you need to validate e.g. that month is less than 12