Check out this 2023 Monthly Landscape Calendar Template for Numbers. Its formatted for US Letter sized paper and the weeks start on Sundays.
It's designed to be an ink saver with thin lines and light fonts. However, it looks fantastic too. Is is super easy to edit so you can add your events, and appointments, images, and checklists to it simply and fast.
It uses only Apple system fonts so you can download it right now and start editing.