"Sat, 31 Jan 1970 22:41:12"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700131
Only TIME
22:41:12
General datetime
1970-01-31 22:41:12Z
For Database
1970-01-31 22:41:12
For HTTP1.1
Sat, 31 Jan 1970 22:41:12 GMT