"Sat, 10 Jan 1970 14:24:53"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700110
Only TIME
14:24:53
General datetime
1970-01-10 14:24:53Z
For Database
1970-01-10 14:24:53
For HTTP1.1
Sat, 10 Jan 1970 14:24:53 GMT