Chandra — paraxis.dev

Chandra

चन्द्र · chandra · the Moon

macOS menu bar

The sky, where you already look.

A jyotisha calendar that lives in the menu bar. The Moon's phase at a glance, a panchanga for any day, and a Lagna Kundali that redraws itself as the lagna moves — all sixteen divisional charts. Computed on your Mac. Nothing is sent anywhere.

Download for macOS not yet released Support the work

macOS 11 Big Sur or later.

The Chandra panel showing a North Indian Lagna Kundali: twelve compartments on a black sky scattered with stars, each holding a rashi abbreviation and the grahas standing in it.

What it does

Nine calendars, a panchanga, and a chart. Each gets its own menu bar item, and you switch off the ones you do not want.

01

The Moon, always visible

The current phase is drawn in the menu bar itself. The calendar beneath gives every day of the month its phase.

02

Nine grahas, nine calendars

A month of transits for any graha — rashi and nakshatra ingresses, stations, combustion — each switchable into the menu bar on its own.

03

A full panchanga

Tithi, vara, nakshatra with pada, yoga, karana, and the muhurtas, for the day you pick. Amanta, purnimanta, or a plain solar month.

04

Sixteen divisional charts

The shodasavarga, from D1 to D60, Parashari throughout. Any of them can sit in the menu bar beside the others.

05

A chart that moves

Each graha stands at its own degree along a route through its house, and the whole ring advances as the lagna crosses its sign.

06

Offline, and private

Swiss Ephemeris runs on your Mac. The app has no account, no telemetry, and no network code at all.

Screenshots

The real panel, rendered by the app's own components at twice the size it draws at.

A month grid for Mangala, February 2025. Most days carry the Mars glyph inside a dashed ring; from the 25th the ring is gone.
Any graha's monthMangala retrograde through February, the dashed ring marking each day of it. It stops at the station on the 24th.
The day view for Shani on 21 August 2026, showing rashi Meena, nakshatra Revati pada 1, and a Motion field reading Retrograde.
Retrograde, said in wordsShani turned back through Meena. The motion is spelled out in a field, and the dotted rail down the edge says it again.
A month grid for August 2026. Each day shows its number above a drawn moon phase; the 20th is ringed in gold as today.
The monthEvery day's phase, drawn rather than named. Today is ringed; scroll or drag to change month.
The day view for 20 August 2026, showing phase, rashi with its end date, and nakshatra with pada and the time it changes.
A dayPhase, rashi, nakshatra, and pada, with the moment each one ends. Arrows step a day at a time.
The same kundali with the degree grid switched on: dotted parallel lines curving through each compartment, marking the thirty degrees of its sign.
The degree gridThe thirty degrees of each sign, drawn across its compartment. Off by default.
The settings list: Calendar, Location, Lagna Kundali, Calendars, Size, Advanced, and About.
SettingsAyanamsa, node type, month system, chart format, and which items sit in the menu bar.

What it is built on

Every position is Swiss Ephemeris. Outside its precise range the chart says so on its face.

EphemerisSwiss Ephemeris 2.10.03
ZodiacSidereal
AyanamsaLahiri, Raman, Krishnamurti, or True Chitra
NodesMean or true
HousesWhole sign
DivisionsD1–D60, Parashari
Chart formatsNorth, South, and East Indian
Precise range1800–2399 CE
CitiesGeoNames, offline
RequiresmacOS 11 or later

Support the work

Chandra is free and open source, and will stay that way. Donations are welcome but not expected.

Not set up yet. This will appear once the app is released. Nothing is being collected in the meantime.