"Sun, 25 Jan 1970 14:24:43"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700125
Only TIME
14:24:43
General datetime
1970-01-25 14:24:43Z
For Database
1970-01-25 14:24:43
For HTTP1.1
Sun, 25 Jan 1970 14:24:43 GMT