"Wed, 21 Jan 1970 05:53:01"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700121
Only TIME
05:53:01
General datetime
1970-01-21 05:53:01Z
For Database
1970-01-21 05:53:01
For HTTP1.1
Wed, 21 Jan 1970 05:53:01 GMT