"Wed, 14 Jan 1970 19:41:02"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700114
Only TIME
19:41:02
General datetime
1970-01-14 19:41:02Z
For Database
1970-01-14 19:41:02
For HTTP1.1
Wed, 14 Jan 1970 19:41:02 GMT