"Tue, 13 Jan 1970 11:37:00"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700113
Only TIME
11:37:00
General datetime
1970-01-13 11:37:00Z
For Database
1970-01-13 11:37:00
For HTTP1.1
Tue, 13 Jan 1970 11:37:00 GMT