I'd love to suggest adding a "Calendar" feature to the top right-hand bar, alongside the chat, journal, art library, and other existing tabs. This calendar would serve two purposes:
Default and Custom Calendar Modes:
The calendar could start off as a standard 12-month (January, February, etc.) layout, but allow full customization. This means DMs could rename months, adjust the number of days, and add in custom holidays or events. Alternatively, it could start with a typical D&D calendar structure, and then be adapted to any homebrew world. This would all be apart of the Top Bar where "Chat, Art Library, Journal, ect...)
Integrated Day Advancement:
When the all party hits the long rest button, the DM would receive a prompt asking if they want to advance the calendar by a day. The DM can confirm or deny this change, making it easy to track how many days have passed in the campaign. The DM could also manually advance days, and even choose which party members rest or don’t via a simple checkbox system.
This feature would streamline in-game timekeeping and help everyone stay on the same page about the passage of time. Thanks for considering!