"Sun, 25 Jan 1970 09:23:17"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700125
Only TIME
09:23:17
General datetime
1970-01-25 09:23:17Z
For Database
1970-01-25 09:23:17
For HTTP1.1
Sun, 25 Jan 1970 09:23:17 GMT