"Sat, 10 Jan 1970 01:21:53"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700110
Only TIME
01:21:53
General datetime
1970-01-10 01:21:53Z
For Database
1970-01-10 01:21:53
For HTTP1.1
Sat, 10 Jan 1970 01:21:53 GMT