The legend under the calendar explains each dot:

• Current day - the date you are currently viewing.
• Open Dates (green) - a delivery date that is open for ordering and already has at least one meal on this menu.
• In Progress (orange) - the date is closed for new orders (cut-off passed or closed manually) but not yet finished.
• Finished (red) - the date has been marked finished (production/delivery completed).
• No Menu (grey) - the delivery date exists and is open, but has zero meals on this menu type, so customers cannot order it yet.

The meal count behind "No Menu" is specific to the menu type you are on: a date can be green on the Meal Prep Menu and grey on the Catering Menu.