"Tue, 18 Feb 2025 19:25:51"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250218
Only TIME
19:25:51
General datetime
2025-02-18 19:25:51Z
For Database
2025-02-18 19:25:51
For HTTP1.1
Tue, 18 Feb 2025 19:25:51 GMT