"Sat, 17 Jan 1970 07:53:17"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700117
Only TIME
07:53:17
General datetime
1970-01-17 07:53:17Z
For Database
1970-01-17 07:53:17
For HTTP1.1
Sat, 17 Jan 1970 07:53:17 GMT