"Tue, 27 Jan 1970 04:34:26"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700127
Only TIME
04:34:26
General datetime
1970-01-27 04:34:26Z
For Database
1970-01-27 04:34:26
For HTTP1.1
Tue, 27 Jan 1970 04:34:26 GMT