"Sat, 18 Jan 2025 09:40:00"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250118
Only TIME
09:40:00
General datetime
2025-01-18 09:40:00Z
For Database
2025-01-18 09:40:00
For HTTP1.1
Sat, 18 Jan 2025 09:40:00 GMT