"Sat, 24 Jan 1970 14:11:47"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700124
Only TIME
14:11:47
General datetime
1970-01-24 14:11:47Z
For Database
1970-01-24 14:11:47
For HTTP1.1
Sat, 24 Jan 1970 14:11:47 GMT