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rcal

rcal is a terminal calendar for quick month, week, and day navigation. It is built in Rust with ratatui, crossterm, and the time crate.

This first milestone is meant for local daily trial use. It opens on the current month, keeps keyboard navigation fast, falls back to week or day views when terminal space is tight, and shows agenda previews from the current local events file plus holiday sources.

Install

From a checkout of this repository:

cargo install --path .

For development:

cargo run -- --date 2026-04-23

Usage

rcal [--date YYYY-MM-DD] [--events-file PATH] [--holiday-source off|us-federal|nager] [--holiday-country CC]
rcal reminders run [--events-file PATH] [--state-file PATH] [--once]
rcal reminders install [--events-file PATH]
rcal reminders uninstall
rcal reminders status
rcal reminders test

Options:

  • --date YYYY-MM-DD: open with a deterministic selected date.
  • --events-file PATH: read and write local user-created events at PATH. By default, rcal uses $XDG_DATA_HOME/rcal/events.json, $HOME/.local/share/rcal/events.json, or a temp fallback.
  • --holiday-source us-federal: use offline U.S. federal holidays. This is the default.
  • --holiday-source off: disable holiday rendering.
  • --holiday-source nager: fetch public holidays from Nager.Date on demand.
  • --holiday-country CC: two-letter country code for Nager.Date. This option requires --holiday-source nager; default is US.
  • --help: show CLI help.
  • --version: show the installed version.

Nager.Date is cache-first and opt-in. Default startup does not need network access.

Controls

  • Arrow keys move the selected date.
  • ? opens contextual help.
  • + opens the Create event modal.
  • In day view, c opens the Copy confirmation for the selected local event.
  • In day view, d opens the Delete confirmation for the selected local event.
  • Enter opens the focused day view.
  • Esc returns from day view to month view.
  • q exits.
  • In day view, Left/Right move to the previous or next day while staying in day view.
  • Digits jump immediately to a day in the visible month. A quick second digit refines the selected day, so 1 selects day 1 and 1 then 6 selects day 16.
  • Weekday initials jump within the selected week. Use tu for Tuesday, th for Thursday, su for Sunday, and sa for Saturday.
  • Left click selects a visible date; double-click a visible date to open day view.

Created events are stored locally as JSON and are shown immediately in month, week, and day views. The create/edit modal supports timed events, single-day all-day events, recurrence, location, notes, and multiple reminder offsets. Reminder notifications are delivered by a user-level background service. Use rcal reminders install to install it, rcal reminders status to inspect it, and rcal reminders test to send a test notification.

Layout

rcal tries to render the full month first. If the terminal is too constrained, it falls back to the selected week. If even that cannot fit cleanly, it falls back to a focused day summary.

Current Limits

  • Real account integrations for Outlook, Google Calendar, Exchange, and similar providers are not implemented yet.
  • Packaging is currently source-based through Cargo.

Development

CI runs the same core commands used locally:

cargo fmt --all -- --check
cargo clippy --all-targets --all-features -- -D warnings
cargo test --all-targets --all-features

The project intentionally keeps private planning notes under .docs/; they are not part of the tracked release surface.