"Fri, 30 Jan 1970 00:19:40"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700130
Only TIME
00:19:40
General datetime
1970-01-30 00:19:40Z
For Database
1970-01-30 00:19:40
For HTTP1.1
Fri, 30 Jan 1970 00:19:40 GMT