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Features Overview

Prisma Calendar is packed with powerful features designed for flexibility, efficiency, and complete control over your calendar workflow.

🎯 Core Capabilities​

Multiple Isolated Calendars​

Up to 10 separate calendars with independent configurations, dedicated folders, custom hotkeys, and clone/duplicate support.

Folder-Based Event Scanning​

Automatic indexing of notes with frontmatter, recursive subfolder scanning, and real-time updates for large vaults.

Templater Integration​

Use Templater templates to scaffold consistent event metadata and custom frontmatter structures.

🔔 Notifications & Alerts​

Desktop notifications with rich modal interface, flexible timing (minutes for timed events, days for all-day), per-event overrides, snooze functionality, and automatic duplicate prevention. Includes visual highlighting of upcoming events with configurable contrast.

🎨 Customization & Visual Control​

Dynamic Color Rules​

JavaScript expressions map frontmatter to colors (Priority === 'High' → #ef4444). First match wins, with default fallback and live updates.

Advanced Filtering & Search​

Global event search with cycle filters, search bar for quick text filtering, expression filter for property-based logic, filter presets, and filtered events modal. Includes command to highlight events without categories.

Statistics & Time Tracking​

Daily, weekly, monthly, and all-time views with pie charts and breakdown tables. Dual aggregation modes (Event Name vs Category), break time support, smart grouping, period navigation, and paginated tables (20 entries per page).

Frontmatter Display​

Display custom properties inside event chips with clickable wikilinks and configurable property selection.

View Modes & Display​

Month, week, day, and list views with CTRL+scroll zoom (1-60 minute increments), display density options, event overlap control, and customizable time ranges.

🔄 Recurring Events System​

Node-based architecture where one source file controls the entire series. Creates real Obsidian notes with complete frontmatter and content inheritance. Virtual events show far-future instances without creating files. Includes calendar-based creation, source navigation, instance dropdown, and centralized management modal with type filters and quick actions.

⚡ Event Interaction & Management​

Hidden ZettelID Naming System​

Create unlimited events with identical display names. Files stored with unique timestamp suffixes (e.g., Meeting-20250106143022.md) but displayed as Meeting throughout the UI.

Enhanced Event Previews​

Hover previews and enlarged modals with clickable frontmatter, wikilink navigation, and complete event context.

Event Creation & Editing​

Create and edit events with full frontmatter support, recurring options, categories, break time, and built-in time tracker with session and break timers

Quick create button, enhanced edit modal with full frontmatter editing, "Now" button for current time, built-in time tracker with break time support, session tracking, and real-time timers (total, total break, session, current break), drag & drop, resize support, edge scrolling for cross-week movement, and direct file opening.

Category Management: Assign categories directly from the event modal or context menu using the "Assign Categories" button. Multi-select interface with search, color indicators, and the ability to create new categories on the fly. See Color Rules for details.

See Screenshots for modal examples.

Event Presets​

Save reusable templates with pre-filled values including title, dates, categories, recurring patterns, and custom properties. Configure a default preset that auto-applies to new events.

Event Skipping​

Mark events as skipped without deletion. Preserves recurring series integrity with management dialog and undo support.

Batch Operations​

Multi-select mode with visual indication and selection persistence. Bulk actions include delete, duplicate, week shifting (move/clone), batch skip, batch category assignment, and batch open in tabs.

🔧 System Features​

Manual Calendar Refresh​

Manually trigger full resync via command palette when events appear out of sync or after bulk file operations. Automatic refresh with loading indicator.

Reactive Settings​

All settings changes apply instantly without restart. Live recalculation of color rules, filters, and views with real-time feedback.

Undo/Redo System​

Every action is undoable with semantic labels ("Undo Create Event", "Undo Batch Delete"). Full history across all calendar operations.

Fill Time from Adjacent Events​

Right-click timed events or use modal buttons to fill start/end times from neighboring events. Schedule back-to-back meetings and eliminate calendar gaps. Supports undo/redo.

ICS Integrations​

Export/import ICS files with timezone selection, skip filtering, and wide compatibility (Google Calendar, Apple Calendar, Outlook, Nextcloud). Includes VALARM reminders and CalDAV sync.

📋 Example Configurations​

Example Frontmatter​

---
Title: Sprint Planning
Start: 2025-02-03T10:00
End: 2025-02-03T11:00
RRule: bi-weekly
RRuleSpec: monday
Project: Work
Priority: High
Status: Active
Tags: [meeting, planning, sprint]
---

## Meeting Agenda
- Review last sprint
- Plan upcoming sprint
- Assign tasks

Example Color Rules​

fm.Priority === 'High'          → #ef4444  // Red for high priority
fm.Project === 'Work'           → #3b82f6  // Blue for work projects
fm.Status === 'Done'            → #10b981  // Green for completed
fm.Tags?.includes('urgent')     → #f59e0b  // Orange for urgent

Example Filter​

// Show only active, non-completed events
fm.Status !== 'Done' && fm.Status !== 'Cancelled'

// Show only work-related events
fm.Project === 'Work' || fm.Tags?.includes('work')

// Hide archived events
!fm.Tags?.includes('archived')