"Sun, 15 Dec 2024 11:47:47"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241215
Only TIME
11:47:47
General datetime
2024-12-15 11:47:47Z
For Database
2024-12-15 11:47:47
For HTTP1.1
Sun, 15 Dec 2024 11:47:47 GMT