"Sun, 15 Dec 2024 20:55:45"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241215
Only TIME
20:55:45
General datetime
2024-12-15 20:55:45Z
For Database
2024-12-15 20:55:45
For HTTP1.1
Sun, 15 Dec 2024 20:55:45 GMT