"Sun, 15 Mar 1970 07:11:59"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700315
Only TIME
07:11:59
General datetime
1970-03-15 07:11:59Z
For Database
1970-03-15 07:11:59
For HTTP1.1
Sun, 15 Mar 1970 07:11:59 GMT