"Sun, 25 Jan 1970 00:52:50"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700125
Only TIME
00:52:50
General datetime
1970-01-25 00:52:50Z
For Database
1970-01-25 00:52:50
For HTTP1.1
Sun, 25 Jan 1970 00:52:50 GMT