"Tue, 13 Jan 1970 07:49:05"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700113
Only TIME
07:49:05
General datetime
1970-01-13 07:49:05Z
For Database
1970-01-13 07:49:05
For HTTP1.1
Tue, 13 Jan 1970 07:49:05 GMT