"Thu, 15 Jan 1970 00:59:03"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700115
Only TIME
00:59:03
General datetime
1970-01-15 00:59:03Z
For Database
1970-01-15 00:59:03
For HTTP1.1
Thu, 15 Jan 1970 00:59:03 GMT