"Sat, 25 Jan 2025 20:18:04"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250125
Only TIME
20:18:04
General datetime
2025-01-25 20:18:04Z
For Database
2025-01-25 20:18:04
For HTTP1.1
Sat, 25 Jan 2025 20:18:04 GMT