"Sun, 15 Dec 2024 19:02:27"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241215
Only TIME
19:02:27
General datetime
2024-12-15 19:02:27Z
For Database
2024-12-15 19:02:27
For HTTP1.1
Sun, 15 Dec 2024 19:02:27 GMT