"Sat, 21 Dec 2024 14:59:23"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
14:59:23
General datetime
2024-12-21 14:59:23Z
For Database
2024-12-21 14:59:23
For HTTP1.1
Sat, 21 Dec 2024 14:59:23 GMT