A lightweight terminal calendar with per-day notes. Single Python file, no dependencies beyond the standard library.

                       ◄  July 2026  ►

  ┌───────┬───────┬───────┬───────┬───────┬───────┬───────┐
  │  Mon  │  Tue  │  Wed  │  Thu  │  Fri  │  Sat  │  Sun  │
  ├───────┼───────┼───────┼───────┼───────┼───────┼───────┤
  │-29-   │-30-   │- 1-   │- 2-   │- 3-   │- 4-   │- 5-   │
  ├───────┼───────┼───────┼───────┼───────┼───────┼───────┤
  │- 6-   │- 7-   │- 8-   │- 9-   │-10-·  │-11-   │-12-   │
  ├───────┼───────┼───────┼───────┼───────┼───────┼───────┤
  │-13-   │-14-   │-15-   │-16-·  │-17-   │-18-   │-19-   │
  │       │       │       │code … │       │       │       │
  ├───────┼───────┼───────┼───────┼───────┼───────┼───────┤
  │-20-   │-21-   │-22-   │-23-·  │-24-   │-25-   │-26-   │
  │       │       │       │denti… │       │       │       │
  ├───────┼───────┼───────┼───────┼───────┼───────┼───────┤
  │-27-   │-28-   │-29-   │-30-   │-31-   │- 1-   │- 2-   │
  │       │       │       │       │       │       │       │
  └───────┴───────┴───────┴───────┴───────┴───────┴───────┘
─────────────────────────────────────────────────────────────
  Thu 16 Jul 2026
  a:edit  d:del  c:copy  v:paste  [ ]  n/p  /  g  t  q:quit
  code review with backend team

Cells grow to fill the window, so a taller terminal shows more of each note. The key hints adapt to the terminal width.

• Python 3.7+
• A terminal with UTF-8 and 256-colour support (ncursesw)
• Minimum terminal size: 43 columns × 21 rows (22 rows to show every week of a six-week month; below that the grid scrolls to keep the selected day in view)

git clone https://github.com/simddev/pycal
chmod +x pycal/pycal
sudo ln -s "$PWD/pycal/pycal" /usr/local/bin/pycal

No pip, no virtualenv, no build step.

pycal

DD · DD/MM · DD.MM · DD/MM/YYYY · DD-MM-YYYY · DD.MM.YYYY · YYYY-MM-DD · YYYY/MM/DD · YYYY.MM.DD

Notes are capped at 500 characters. The editor scrolls both ways, so notes longer or wider than the panel stay editable. A · marker appears on any day that has a note, including days from adjacent months shown in the grid.

One plain-text file per day, stored at:

$XDG_DATA_HOME/cal-notes/YYYY-MM-DD.txt

Falls back to ~/.local/share/cal-notes/ when $XDG_DATA_HOME is not set. Files are written atomically and are safe to back up, sync, or read directly.

Deleting a note removes its file. An empty note on save is treated as a deletion.

pycal runs on any POSIX system with Python 3.7+ and ncursesw. Tested on Arch Linux and Alpine Linux (musl). Terminals without colour support render correctly in monochrome.

Simon D. · simon.d.dev@proton.me