"Sun, 05 Jan 2025 21:55:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250105
Only TIME
21:55:20
General datetime
2025-01-05 21:55:20Z
For Database
2025-01-05 21:55:20
For HTTP1.1
Sun, 05 Jan 2025 21:55:20 GMT