"Fri, 15 May 1970 07:11:32"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700515
Only TIME
07:11:32
General datetime
1970-05-15 07:11:32Z
For Database
1970-05-15 07:11:32
For HTTP1.1
Fri, 15 May 1970 07:11:32 GMT