Shows on a calendar all dates covered (inclusive) by the entered dates or date ranges. Useful for visualizing missing data, schedules, or events.

Enter date ranges below (one per line). Format: YYYY-MM-DD or YYYY-MM-DD-YYYY-MM-DD. Dates can appear anywhere in the line. Optionally add a color (#rgb or #rrggbb) and a description. Define reusable categories with #name Label on their own line (colors auto-assigned from a palette, or specify one with #name #color Label), then tag date lines with #name.

Named colors (use #name1–#name8, e.g. #earth3):