"Sun, 15 Dec 2024 13:15:43"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241215
Only TIME
13:15:43
General datetime
2024-12-15 13:15:43Z
For Database
2024-12-15 13:15:43
For HTTP1.1
Sun, 15 Dec 2024 13:15:43 GMT