"Sun, 29 Jun 2025 14:44:59"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250629
Only TIME
14:44:59
General datetime
2025-06-29 14:44:59Z
For Database
2025-06-29 14:44:59
For HTTP1.1
Sun, 29 Jun 2025 14:44:59 GMT