"Wed, 22 Apr 1970 07:11:44"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700422
Only TIME
07:11:44
General datetime
1970-04-22 07:11:44Z
For Database
1970-04-22 07:11:44
For HTTP1.1
Wed, 22 Apr 1970 07:11:44 GMT