"Sun, 15 Dec 2024 05:38:01"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241215
Only TIME
05:38:01
General datetime
2024-12-15 05:38:01Z
For Database
2024-12-15 05:38:01
For HTTP1.1
Sun, 15 Dec 2024 05:38:01 GMT