"Sun, 19 Jan 2025 21:49:36"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250119
Only TIME
21:49:36
General datetime
2025-01-19 21:49:36Z
For Database
2025-01-19 21:49:36
For HTTP1.1
Sun, 19 Jan 2025 21:49:36 GMT