"Sat, 10 Jan 1970 09:22:42"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700110
Only TIME
09:22:42
General datetime
1970-01-10 09:22:42Z
For Database
1970-01-10 09:22:42
For HTTP1.1
Sat, 10 Jan 1970 09:22:42 GMT