"Mon, 13 Jan 2025 21:35:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250113
Only TIME
21:35:20
General datetime
2025-01-13 21:35:20Z
For Database
2025-01-13 21:35:20
For HTTP1.1
Mon, 13 Jan 2025 21:35:20 GMT