"Sat, 10 Jan 1970 19:41:38"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700110
Only TIME
19:41:38
General datetime
1970-01-10 19:41:38Z
For Database
1970-01-10 19:41:38
For HTTP1.1
Sat, 10 Jan 1970 19:41:38 GMT