"Wed, 07 Jan 1970 23:36:45"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700107
Only TIME
23:36:45
General datetime
1970-01-07 23:36:45Z
For Database
1970-01-07 23:36:45
For HTTP1.1
Wed, 07 Jan 1970 23:36:45 GMT