"Thu, 01 Jan 1970 14:24:55"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700101
Only TIME
14:24:55
General datetime
1970-01-01 14:24:55Z
For Database
1970-01-01 14:24:55
For HTTP1.1
Thu, 01 Jan 1970 14:24:55 GMT