"Sun, 29 Jun 2025 19:05:45"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250629
Only TIME
19:05:45
General datetime
2025-06-29 19:05:45Z
For Database
2025-06-29 19:05:45
For HTTP1.1
Sun, 29 Jun 2025 19:05:45 GMT