"Sat, 07 Feb 1970 07:48:58"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700207
Only TIME
07:48:58
General datetime
1970-02-07 07:48:58Z
For Database
1970-02-07 07:48:58
For HTTP1.1
Sat, 07 Feb 1970 07:48:58 GMT