"Fri, 30 Jan 1970 00:18:55"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700130
Only TIME
00:18:55
General datetime
1970-01-30 00:18:55Z
For Database
1970-01-30 00:18:55
For HTTP1.1
Fri, 30 Jan 1970 00:18:55 GMT