"Thu, 19 Mar 1970 07:11:39"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700319
Only TIME
07:11:39
General datetime
1970-03-19 07:11:39Z
For Database
1970-03-19 07:11:39
For HTTP1.1
Thu, 19 Mar 1970 07:11:39 GMT