Trello offers various ways to view cards on a calendar, each with its own pros and cons. Board calendars display due dates from checklists, allowing users to visualize the big picture and details at once, but they are limited to one board per calendar and show everything from that board, including completed tasks. Calendar sync allows users to sync their Trello tasks with Google Calendar, providing color-coding and making it easy to spot upcoming events, but it is read-only in Google Calendar and has limitations in terms of timing and control over the syncing process. Workspace calendars pull in information from multiple boards, offering flexibility in filtering and creating private views, but they do not show items from checklists. The Cronofy Power-Up provides a two-way sync between Trello and personal calendar, with customization options for how events appear on the personal calendar, but it allows accidental changes from Google Calendar and does not show due dates from checklists. Ultimately, users can find ways to make Trello work by creating separate cards, using Relate Cards, or connecting Trello to other tools like Todoist via Zapier.