"Thu, 01 Jan 1970 07:54:55"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700101
Only TIME
07:54:55
General datetime
1970-01-01 07:54:55Z
For Database
1970-01-01 07:54:55
For HTTP1.1
Thu, 01 Jan 1970 07:54:55 GMT