"Mon, 27 Jan 2025 19:21:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250127
Only TIME
19:21:21
General datetime
2025-01-27 19:21:21Z
For Database
2025-01-27 19:21:21
For HTTP1.1
Mon, 27 Jan 2025 19:21:21 GMT