Zanshin Calendar

Tibetan and Japanese lunar calendars with their almanac readings, offline

Zanshin Calendar shows one day at a time in the Tibetan calendar or in the old Japanese calendar (旧暦), with the almanac readings that belong to that day, and sunrise, solar noon and sunset for your place.

On its way to F-Droid Source code

Android 8 and later · version 1.0.1 · no internet permission

Tibetan day: Lhabab Düchen, the 22nd of the 9th month, with the almanac and the sun's times in Lhasa

Japanese day: 十三夜, the 13th of the 9th month, 先負, and the solar term 霜降 beginning — A 旧暦 day

A reading opened: Lhabab Düchen explained, with the published source it comes from — Every reading has its source

The 旧暦 almanac: 中段, 二十八宿, 暦注下段 and 選日, each entry with its English — The almanac bands

The menu: Tibetan or 旧暦, location, birth date, and about and sources — Calendar, place and birth date

Tibetan calendar (Phugpa)

Lunar day, month and year, with skipped and doubled days and leap months
Festivals: Losar, Chötrul Düchen, Saga Dawa Düchen, Chökhor Düchen, Lhabab Düchen and others
Monthly observances on the 8th, 10th, 15th, 25th and 30th
Lunar mansion, yoga and karaṇa, the element pair of weekday and mansion, the lunar-day animal, trigram and number
The lunar mansion's nature, and a day in brief: what the activity lists name good or to avoid for the day's weekday, date, mansion, animal and trigram
Good and bad days for cutting hair, and personal days for your birth year
The four aspects of the year (vitality, body, destiny, luck) and, for your birth year, the white and black pebbles of the year, month, day and each hour, on a round dial of the hours

Old Japanese calendar (旧暦, Tenpō rules)

Month and day, rokuyō (六曜), the current solar term (二十四節気) and the moon phase
The twelve stations (十二直, the middle band), the lunar lodge (二十八宿) and the day's 九星
Lucky and unlucky days of the lower band (暦注下段) and the selected days (選日), such as 天赦日, 一粒万倍日, 不成就日 and 三隣亡
Seasonal markers (雑節), festivals, the day and year signs (干支) and the lucky direction of the year (恵方)

Tap any Tibetan term or kanji to see its English. Tap an almanac line to read what it means, what it favours and what to avoid, with the published source it comes from.

In English and Russian: choose the language in the menu, or let the app follow the phone.

Computed on the phone

Everything is calculated on the device for any date from 1900 to 2100: Tibetan dates with Svante Janson's published arithmetic, new moons and solar terms with Jean Meeus's algorithms and the VSOP87 solar theory. The results are checked against Edward Henning's Tibetan calendars and the National Astronomical Observatory of Japan.

Private

The app has no internet permission. Your location is taken once from GPS when you ask for it, picked from an offline list of cities, or typed in as coordinates, and it stays on the phone.

Sources named

No reading is written from memory. Each one names the book, table or almanac it comes from, and the formulas and test vectors are listed in the specification.

New in 1.0.1

The old Japanese calendar now names its almanac bands as the sources do: the middle band (中段) holds the twelve stations alone, the lunar lodge has its own line, and the lower band (暦注下段) and the selected days (選日) are listed separately. The day's 九星 moves next to the month and year stars.

On its way to F-Droid Source code