"Thu, 01 Jan 1970 17:11:43"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700101
Only TIME
17:11:43
General datetime
1970-01-01 17:11:43Z
For Database
1970-01-01 17:11:43
For HTTP1.1
Thu, 01 Jan 1970 17:11:43 GMT