"Sun, 15 Dec 2024 05:38:37"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241215
Only TIME
05:38:37
General datetime
2024-12-15 05:38:37Z
For Database
2024-12-15 05:38:37
For HTTP1.1
Sun, 15 Dec 2024 05:38:37 GMT