The date/time information in your envelope/draft details is displayed based on the language settings in your browser. If it is set by default to US English, the format will be MM/DD/YYYY and your local time zone:
Example: 08/02/2023 at 2:52PM CST
For other areas, it will follow that region's format. If language settings in your browser are set to English (United Kingdom), the format will be DD/MM/YYYY with 24H time:
Example for same envelope: