"Sat, 28 Mar 1970 07:12:22"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700328
Only TIME
07:12:22
General datetime
1970-03-28 07:12:22Z
For Database
1970-03-28 07:12:22
For HTTP1.1
Sat, 28 Mar 1970 07:12:22 GMT