"Sun, 25 Jan 1970 00:28:22"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700125
Only TIME
00:28:22
General datetime
1970-01-25 00:28:22Z
For Database
1970-01-25 00:28:22
For HTTP1.1
Sun, 25 Jan 1970 00:28:22 GMT