"Sat, 24 Jan 1970 00:54:22"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700124
Only TIME
00:54:22
General datetime
1970-01-24 00:54:22Z
For Database
1970-01-24 00:54:22
For HTTP1.1
Sat, 24 Jan 1970 00:54:22 GMT