Zo: Zoroastrian Calendar

NEW: Track Geh prayer-periods and Moon Phases (Punam, Amas, Chandrat) right on your calendar, plus a dedicated Events tab for every Sacred Day and Anniversary.

Zo Calendar is a modern Zoroastrian calendar for Parsi, Irani, and Zarathushti communities worldwide. Whether you follow Shahenshahi, Kadmi, or Fasli, it keeps you connected to your faith, traditions, and community every day.

THREE CALENDAR SYSTEMS, ONE APP

• Shahenshahi followed by most Parsis in India
• Kadmi runs 30 days ahead of Shahenshahi
• Fasli aligned with the spring equinox

Switch instantly between calendars from settings.

DAILY ROJ AND MAH

• Today's Roj (day) and Mah (month)
• Roj Yazata with meaning and spiritual significance
• Distinctive Roj artwork for each day
• Compare all three calendar dates in one tap

GEH: THE FIVE DAILY PRAYER PERIODS

• Havan, Rapithwin, Uzirin, Aiwisruthrem, and Ushahin
• See exactly which Geh you are in, right now
• Reminders for each period
• Calculated from your city's sunrise and sunset

CHOGHADIYA AUSPICIOUS TIMES

• 16 daily time periods day and night
• Colour coded by auspiciousness
• Highlights Amrit, Shubh, Labh
• Based on local sunrise and sunset

MOON PHASES

• Punam (Full Moon), Amas (No Moon), and Chandrat (first crescent)
• Automatically tracked right on your calendar
• Calculated for your exact city and time

SACRED OBSERVANCES AND FESTIVALS

Stay updated on key religious days:

• Navroz New Year
• Khordad Sal birth of Prophet Zarathushtra
• Muktad Farvardigan 10 day remembrance
• All six Gahambars
• Gatha Days
• Pateti
• Jashan days when Roj equals Mah
• Festivals like Sadeh, Yalda, Tirgan, Mehregan

Each includes significance, rituals, and traditions.

SACRED ANNIVERSARIES: FIRE TEMPLE SALGIRAHS

• Atash Behrams across Udvada, Navsari, Surat, and Mumbai
• Atash Adarans across Mumbai, Surat, Gujarat, Maharashtra, and the diaspora
• Founding year and city for each fire temple
• Salgirah day notifications across every panth
• Roj and Mah doctrinally validated, with disputed entries withheld until priestly confirmation

A growing canon, expanding with every release.

BROWSE EVERYTHING IN ONE PLACE

• A dedicated Events tab covering the whole year
• Every Sacred Day, Anniversary, and Moon Phase, filterable by category
• Today, upcoming, and past organized clearly

YOUR SPECIAL MOMENTS

• Save up to 15 moments
• Monthly Roj birthdays
• Baj remembrance days
• Navjote, wedding anniversaries, and more
• Smart reminders
• Cloud sync across devices

TODAY'S ROJ ON YOUR HOME SCREEN

• Roj and Mah with themed artwork
• Sacred Day indicators
• Pre sunrise awareness
• Quick access to today's calendar

BUILT FOR THE COMMUNITY

• Works offline
• Google or Apple sign in
• Dark mode
• Location based sunrise and sunset
• Covers 49 plus cities across India and globally

Download Zo Calendar and carry your faith, observances, and heritage with you every day.