"Sat, 03 Jan 1970 15:13:07"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700103
Only TIME
15:13:07
General datetime
1970-01-03 15:13:07Z
For Database
1970-01-03 15:13:07
For HTTP1.1
Sat, 03 Jan 1970 15:13:07 GMT