"Thu, 15 Jan 1970 23:30:53"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700115
Only TIME
23:30:53
General datetime
1970-01-15 23:30:53Z
For Database
1970-01-15 23:30:53
For HTTP1.1
Thu, 15 Jan 1970 23:30:53 GMT