MD Calendar

A calendar that lives in one Markdown file. Drop a ```md-calendar code block into any note and it renders a switchable month / week / day / agenda calendar — events and tasks, recurrence, colors, notes, and drag-to-reschedule. The block's body is a small JSON document, so all the data lives inside that one note; the rest of the note stays a normal, editable Markdown file. Nothing else is required — it's a self-contained calendar.

Usage

Click the ribbon icon (or run “Open the calendar note”) — it opens your calendar, creating the note on first use. One calendar per vault is the default; enable Multiple calendars in settings to make the button create a new note every time. You can also run “Insert calendar” or type the block yourself anywhere:

```md-calendar
{
  "events": []
}
```

Switch to Reading view or Live Preview and the block becomes the calendar. Every change you make in the UI is written straight back into the block.

It stays the calendar, too. In Live Preview an editor normally unfolds a code block into its source as soon as the text cursor lands inside it — reopening a note with the cursor remembered there, or walking into it with an arrow key, would drop you into raw JSON. The cursor is kept out instead, so the calendar stays a calendar. The block's edit pencil and Source mode still open the JSON when you actually want it.

The header

• ‹ Today › — page back/forward by the current view's period, or jump to today.
• Month · Week · Day · Agenda — switch views. Your choice is remembered per note.
• Period heading — click it to jump to any date (G on the grid does the same).
• Search (🔍) — find an event by title or description anywhere in the calendar, upcoming first. Enter jumps to its date, Ctrl/Cmd+Enter opens it. F on the grid, or the Find an event command.
• Copy the period as text — puts what you are looking at into the clipboard as a plain Markdown list: a heading, a block per day, times, task checkboxes and descriptions. Month and agenda copy the month itself, not the padding days of the grid; a multi-day event is written once with its date range; hidden completed items stay hidden. C on the grid, or the Copy the visible period as text command.
• Calendar name (pencil) — the optional heading above the controls. Empty hides it.
• Completed toggle — show or hide done events. The trash button next to it deletes every completed item, and the archive button clears out the past — see Keeping the note small below.
• Records without a date — a record whose date is missing or unreadable is never dropped: an orange strip appears, and Sort out lets you give each one a date or delete it. Until then it round-trips into the note untouched.
• Add bar — type a title and press Enter: the calendar enters placement mode — a banner appears and you pick the day (in month or the agenda mini-calendar, or the all-day strip / an hour slot in week/day) by click or by arrows + Enter/Space. Clicking an hour slot sets the time right away; otherwise a quick time prompt follows — leave it empty for an all-day event. Start the line with - (or press Ctrl/Cmd+Enter) to add a task instead — it lands on the picked day with no time step. Esc or the banner's ✕ cancels.

Events and tasks

• All-day or timed. An event with no start time is all-day; give it a start and it becomes a positioned block in the week/day time grid, lasting exactly one hour by default (change the end in the editor for a different length). In the editor, moving the start time drags the end along, keeping the duration.
• Tasks — a to-do on a day: no time, and a checkbox in every view so you can tick it off right in the grid. Create one with a leading - (or Ctrl/Cmd+Enter) in the add bar, the Task toggle in quick create, or Kind: Task in the editor. An unfinished task never sinks into the past — it carries forward to today, drawn red, until you complete it (ticking pins it to the day it was done).
• Multi-day all-day events (an end date) draw across each day they cover.
• Recurrence — every day / week / month / year, every weekday, or on chosen weekdays. Interval sets the N of “every N weeks”: 2 is every other week, 3 is every third month. Completing a repeating event (or task) rolls it forward to the next occurrence (month/year repeats keep their day-of-month, so an end-of-month event stays end-of-month). A series can end: set “Until” in the editor as a date, or type a number into “or times” and the date is computed for you. Completing the last occurrence finishes the whole series (it renders done; un-tick to revive it).
• Deleting one occurrence — right-click it → Delete this occurrence: only that date is skipped, the series continues before and after (going on vacation = delete two weeks of gym sessions, they resume when you're back). Delete series removes the whole event. The skipped dates are listed in the event editor under Skipped — click one to bring that occurrence back, or Restore all to clear the list. Completing a repeat rolls it past any deleted dates.
• Postpone — right-click an item → Postpone → to tomorrow, by a week, or a date you pick. Measured from the day you are looking at, so postponing an overdue task carried forward to today means tomorrow — not the day after its original date.
• Colors — pick one of the theme colors (red, orange, yellow, green, blue, purple) in the event editor; it adapts to your theme and renders in every view. The default is your theme's accent color.
• Notes — an event can carry a short free-text note (edited in the event editor). It shows in the hover tooltip in month/week/day, and under the title in agenda.
• Quick create: click an empty day (or an hour slot in week/day) and a small window opens — type the title, press Enter, type a time like 1500, press Enter to add. Two Enters (leaving the time empty) makes it an all-day event; the Task toggle (or Ctrl/Cmd+Enter) adds a task instead. More options… opens the full editor (kind, repeat, end time, multi-day, color, note). Click an existing event to edit it; in the full editor Cmd/Ctrl+Enter saves.

Drag to reschedule

Drag a non-recurring event (or task) to move it:

• Month / all-day: drag the chip to another day. Multi-day spans move as a whole.
• Week / Day: drag a timed block to another time or day — it snaps to the grid step and keeps its duration. While dragging, a dashed ghost with the exact time shows where the block will land (snap included). Drag the top or bottom edge of a block to change its start or end time, and the ends of a multi-day bar to stretch the span across days. Draw on empty space (press and drag vertically) to create an event with exactly that start and length — release and type the title.
• Hold Ctrl/Cmd while releasing to drop a copy instead of moving the original.

Dragging one occurrence of a recurring event moves just that occurrence: the original date is skipped and the moved copy becomes an ordinary standalone event, leaving the rest of the series untouched.

On mobile a long-press starts the drag — the context menu is suppressed for draggable items there (recurring events keep it: they can't be dragged, and it's the way to delete one occurrence on a phone).

Views

• Month — the classic grid; each day shows a few event chips and “+N more”. Multi-day events draw as continuous bars across the week rows (clipped ends mean the event continues into the neighboring week); drag a bar to move the whole span.
• Week — a 7-column hour grid; timed events are blocks sized to their duration, all-day events sit in a band at the top — multi-day ones as continuous bars across their days, exactly like in month view. Overlapping events split into columns.
• Day — the week grid focused on one day.
• Agenda — a mini month calendar where each day shows up to three colored dots for its events; click a day to see (and add) its events in the panel beside it — below it on narrow screens. Click the selected day again to create an event there. The friendliest view on mobile.

The selected day carries a quiet summary — “3 events · 1 task” — on the agenda date line and in the day view's column header (in month view it's the day cell's tooltip). Tasks are counted only while undone: that is the number that still asks something of you. Events are counted as drawn.

On a phone the switcher offers just Agenda and Day — agenda by default (its dotted mini calendar is the month overview). The view saved in the note by your desktop is left untouched: the phone only narrows what it shows, per session.

Every view is keyboard-navigable — the arrow keys or WASD move the selection (physical keys, so they work in any layout). In month and agenda, left/right is ±1 day and up/down ±1 week. In week and day the selection is two-dimensional: it starts on today's all-day band; A/D (←/→) pick the day, W/S (↑/↓) walk down into the hour slots and back up. Enter or Space creates an event on the selection — from an hour slot it carries that time into the dialog. Q/E cycle the view left/right through month → week → day → agenda. PageUp/PageDown switch months (Shift — a year), Home/End jump to the week's edges. T — like the Today button — jumps the selection to today and resets the week/day slot cursor to the all-day band, keeping the grid focused. G goes to a date, F opens search, C copies the period as text. Tab steps into the selected day's items (Enter edits, Space completes, Delete removes, M opens the menu, Escape steps back out). With an item picked, the digits 1–7 set its color (the swatch order of the editor, 1 being the accent) and Shift+arrows move the item itself rather than the cursor: left/right by a day, up/down by a week — or, for a timed item in week/day, up and down slide it by one grid step of time, duration kept. The selection follows the item, so the keys can simply be repeated. A dedicated calendar note (the block is the whole note, as made by the command) focuses the grid on open — the keys work immediately. In a calendar embedded among other text, click or Tab onto the grid first (closing an event dialog also returns focus to the grid). The selection ring shows while the grid holds focus; in agenda the selected day drives the side panel. Ctrl/Cmd+Z anywhere in the calendar undoes the last calendar change, Shift+Z (or Ctrl+Y) redoes — the note editor's own undo history stays untouched. Deletes never ask for confirmation: undo is the safety net, and on mobile the delete notice carries a one-tap Undo button.

Settings: default view (desktop and mobile separately), the first day of the week (Obsidian's locale, or a fixed day), the working-hours window (default 07–22), the duration of a new timed event (default one hour), the drag/resize snap step (15 / 30 / 60 minutes), how many events a month cell shows before “+N more”, the completion chime (a soft synthesized two-note sound on ticking something done — no audio files involved), and the two items below. Times are shown in 24-hour format.

Filling the pane

Obsidian's readable line width is right for a paragraph and wrong for a grid: it leaves the calendar in a narrow column with much of the pane empty on either side, ending wherever its content happens to stop. Fill the pane lifts that clamp for a note holding a calendar and gives the block the height left below it, so the month rows, the hour grid and the agenda's day panel grow with the window instead of with the text column. The height is measured, not assumed, and follows a window resize, a sidebar toggle or a split. The setting chooses where this applies — desktop only (the default), mobile only, everywhere, or nowhere — since the two platforms fit differently.

On desktop the fit is exact: the block ends where the pane does, so the note itself has nothing left to scroll. When the calendar is the last thing in the note, its scrollbar goes as well. Write anything below the block and the scrollbar comes back — the calendar gives up exactly the height that text needs rather than covering it. On mobile, where a resize or a sidebar toggle can't recover space the way it can on desktop, the calendar takes the same measured height but is free to grow past it — the note scrolls instead of anything being clipped.

What's coming up

On desktop the status bar shows the next thing in your calendar — 16:00 · Rehearsal — with the note closed: it reads the calendar note from disk, refreshes every minute and whenever that note changes, and a click opens the calendar on that day. A timed event today counts until it finishes (the meeting you're sitting in is still what's happening); all-day items and tasks count all day, but on today they step aside for a real appointment still ahead — so an overdue task can't camp there and hide it. Nothing upcoming means no item at all. Turn it off in settings.

Keeping the note small

A calendar that lives in one note keeps everything you ever put in it, and years of finished appointments are dead weight in a file you sync. Delete the past (the archive button, or the Delete past records command) clears out what is over: pick a cut-off — today, a month back, three months, a year, or a date of your own — and it tells you exactly how much would go before you commit. One Ctrl+Z brings the whole sweep back.

What it never deletes: an unfinished task (it carries forward to today, so it is never in the past) and a repeat that is still running — one with no end date, or an end still ahead. A multi-day event is judged by the day it ends on.

Series that stay are still trimmed of their ballast: every skipped occurrence and every completed occurrence recorded behind the cut-off. In a long-running weekly event those accumulated dates are most of what the note is carrying, and none of them can matter again.

Storage format

The JSON is human-inspectable but meant to be edited through the UI. If you hand-edit it into invalid JSON, the block shows an error with a Reset block button. An optional top-level "title" string is shown as a heading above the calendar controls.

Interface follows Obsidian's language (English, or Russian when the app is set to Russian), works on desktop and mobile.

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Author: mrrepac · MIT