"Fri, 16 Jan 1970 12:01:55"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700116
Only TIME
12:01:55
General datetime
1970-01-16 12:01:55Z
For Database
1970-01-16 12:01:55
For HTTP1.1
Fri, 16 Jan 1970 12:01:55 GMT