"Sun, 19 Jan 2025 20:38:40"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250119
Only TIME
20:38:40
General datetime
2025-01-19 20:38:40Z
For Database
2025-01-19 20:38:40
For HTTP1.1
Sun, 19 Jan 2025 20:38:40 GMT