"Tue, 27 Jan 1970 01:25:26"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700127
Only TIME
01:25:26
General datetime
1970-01-27 01:25:26Z
For Database
1970-01-27 01:25:26
For HTTP1.1
Tue, 27 Jan 1970 01:25:26 GMT