"Sat, 24 Jan 1970 11:36:42"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700124
Only TIME
11:36:42
General datetime
1970-01-24 11:36:42Z
For Database
1970-01-24 11:36:42
For HTTP1.1
Sat, 24 Jan 1970 11:36:42 GMT