"Sat, 31 Jan 1970 07:55:25"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700131
Only TIME
07:55:25
General datetime
1970-01-31 07:55:25Z
For Database
1970-01-31 07:55:25
For HTTP1.1
Sat, 31 Jan 1970 07:55:25 GMT