"Sat, 10 Jan 1970 04:36:37"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700110
Only TIME
04:36:37
General datetime
1970-01-10 04:36:37Z
For Database
1970-01-10 04:36:37
For HTTP1.1
Sat, 10 Jan 1970 04:36:37 GMT