"Wed, 14 Jan 1970 03:45:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700114
Only TIME
03:45:15
General datetime
1970-01-14 03:45:15Z
For Database
1970-01-14 03:45:15
For HTTP1.1
Wed, 14 Jan 1970 03:45:15 GMT