"Sun, 15 Dec 2024 09:36:39"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241215
Only TIME
09:36:39
General datetime
2024-12-15 09:36:39Z
For Database
2024-12-15 09:36:39
For HTTP1.1
Sun, 15 Dec 2024 09:36:39 GMT