"Mon, 20 Jan 2025 20:38:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250120
Only TIME
20:38:20
General datetime
2025-01-20 20:38:20Z
For Database
2025-01-20 20:38:20
For HTTP1.1
Mon, 20 Jan 2025 20:38:20 GMT