"Sun, 19 Jan 2025 04:18:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250119
Only TIME
04:18:15
General datetime
2025-01-19 04:18:15Z
For Database
2025-01-19 04:18:15
For HTTP1.1
Sun, 19 Jan 2025 04:18:15 GMT