"Sat, 18 Jan 2025 16:38:55"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250118
Only TIME
16:38:55
General datetime
2025-01-18 16:38:55Z
For Database
2025-01-18 16:38:55
For HTTP1.1
Sat, 18 Jan 2025 16:38:55 GMT