"Sat, 17 Jan 1970 12:53:29"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700117
Only TIME
12:53:29
General datetime
1970-01-17 12:53:29Z
For Database
1970-01-17 12:53:29
For HTTP1.1
Sat, 17 Jan 1970 12:53:29 GMT