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