✦ zenith calendar · the western astrology almanac
sign changes and planetary turns in one quiet layer of your sky, each at its exact moment.
astrology · western is one of the sky almanacs that come with zenith calendar. it holds the tropical zodiac: the sun and the planets from mercury to pluto entering each sign, and each planet turning retrograde or direct. it holds no moon entries, and no rahu or ketu.
its moments were worked out once, before the app shipped, and checked against published tables; nothing is worked out on your phone. each one shows on the day it falls where you are, with its exact time on its own page.
tropical zodiac · measured from the aries point, the spring equinox
the sun entering a sign
the moment the sun crosses into a new sign of the tropical zodiac.
an all-day entry on the day that moment falls where your phone is, with its exact time on its own page; dated by universal time here.
a planet turning retrograde
the moment a planet turns retrograde, kept for each planet from mercury to pluto.
shown on its day like every moment in the almanac, with its exact time on its own page.
a planet turning direct
the moment a planet turns direct again, closing its retrograde.
shown on its day like every moment in the almanac, with its exact time on its own page.
the aries point
the spring equinox
the start of the tropical zodiac: the aries point is the spring equinox rather than a star, and it is the mark this almanac wears.
the same moment the celestial almanac marks as the march equinox, shown on the day it falls where you are.
zenith calendar draws the year as an orbit round the sun. lit, astrology · western puts its moments on their days on that ring, in rose. its mark is ♈︎, the aries point.
each entry is kept as its exact moment and drawn as an all-day entry on the day that moment falls where your phone is, with its exact time on its own page.
western and vedic are two almanacs rather than one with a switch, because they read the same sky about 24 degrees, roughly three weeks of dates, apart. light the one you follow, or both.
astrology · western arrives locked, so nothing in it changes by accident. the lock guards your hand, not your eye: tap its chip in the legend to eclipse it (kept, but not drawn) and tap again to shine it. one tap unlocks it, and then it is yours to rename, recolour or add to.
astrology · western shares one sky with your own commitments. like every almanac that comes with the app, it never counts toward the almanacs you can make for free, and it lives on your phone: zenith calendar has no server of its own.
✦ zenith calendar · the sky around it
astrology · western is a single layer. beneath it is a whole calendar drawn as the sky, your year an orbit round the sun, and every part of it answers your touch.
the sun stands at the centre and the year rings round it, with today's earth riding at today's place, its small moon beside it. tap the ring anywhere else and a faint ghost earth waits on that day.
drag along the ring and the days pass under your finger, the big date and the day's list following as you go. lift, and the day you stopped on stays picked.
tap the small moon beside today's earth and you dive into the week. the moon above shows its phase, named underneath; swipe the dates and each week brings its own.
tap the sun and the ring tips on its edge into a ladder of years. in the week, pull the moon firmly down and the month opens, the moon resting half off its foot.
zenith calendar has no server of its own. tap the gear and switch on "nothing comes in" or "nothing leaves this phone"; lift them, and every almanac is back exactly as it was.
astrology · western is waiting in the app, and the rest of the sky comes with it.
astrology · western (the tropical zodiac) ·
In the western almanac, Mercury goes retrograde on 24 October 2026 and goes direct on 13 November 2026, both dated by universal time.
In the tropical zodiac the sun enters Scorpio on 23 October 2026 by universal time.
In the tropical zodiac the sun enters Aries on 20 March 2027 by universal time, the same moment as the March equinox.
Western uses the tropical zodiac, measured from the spring equinox. Vedic uses the sidereal zodiac by the Lahiri ayanamsa, measured against the fixed stars. The two read the same sky about 24 degrees apart, so they are separate almanacs.
Zenith Calendar for Android comes with an almanac called astrology · western: the sun and planets entering each sign, and each planet turning retrograde or direct, drawn on the ring of your year beside your own days. Turning it on costs nothing.
No. It holds the sun and the planets from Mercury to Pluto entering each sign, and each planet's retrograde and direct turns. There are no moon entries.
They were worked out once by the calendar's own astronomy before the app shipped and checked against published tables, so nothing is worked out on your phone.