"Fri, 06 Feb 1970 04:42:25"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700206
Only TIME
04:42:25
General datetime
1970-02-06 04:42:25Z
For Database
1970-02-06 04:42:25
For HTTP1.1
Fri, 06 Feb 1970 04:42:25 GMT