"Fri, 30 Jan 1970 01:00:40"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700130
Only TIME
01:00:40
General datetime
1970-01-30 01:00:40Z
For Database
1970-01-30 01:00:40
For HTTP1.1
Fri, 30 Jan 1970 01:00:40 GMT