"Sun, 15 Dec 2024 23:51:48"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241215
Only TIME
23:51:48
General datetime
2024-12-15 23:51:48Z
For Database
2024-12-15 23:51:48
For HTTP1.1
Sun, 15 Dec 2024 23:51:48 GMT