TithiRemember every event by BS date & tithi, in your calendar.
BS dates and tithis move against the AD calendar every year, so ordinary calendars cannot repeat them. Tithi works out each year's date and sends reminders to the calendar you already use.
How it works
Three steps. Then your calendar does the remembering.
Add a date
Enter a birthday or anniversary in BS or AD, or a shraddha by its tithi alone.
Tithi works it out
Each year's BS date, AD date and tithi, computed at sunrise in Kathmandu, with month names as Nepali patros print them.
Get reminded
The evening before and on the morning of the day, in Google Calendar or any calendar app.
Made for Nepali dates
Built around the patro, not bolted onto an English calendar.
- Shraddha by tithi alone
- Know only Kartik Krishna Tritiya? Add it as is and see the next three dates before you save.
- Adhik and kshaya tithis handled
- Adhik months, skipped and repeated tithis follow the same rules as the patro.
- Google Calendar sync
- Changes appear in a separate Tithi calendar within seconds. Apple Calendar and Outlook can subscribe to a private feed.
- English and Nepali
- The whole app, dates and digits included, in either language.
- Works offline
- Install it on your phone; your list opens without a connection.
- Private
- Your list is yours alone. Tithi never sees your other calendars, contacts or mail.
Questions
What people ask before they start.
How do I get Nepali birthday reminders in Google Calendar?
Sign in to Tithi with Google, add each birthday by its BS date, and connect Google Calendar. Tithi creates a calendar named Tithi with every birthday for the next three years, on its BS date, AD date and tithi, and keeps it up to date.
What is a tithi?
A tithi is a lunar day: one of 30 steps of 12 degrees in the Moon's angle from the Sun. Festivals, lunar birthdays and shraddha follow the tithi in force at sunrise.
Why does a BS birthday fall on a different AD date every year?
Bikram Sambat months follow the Sun through the zodiac, so they do not line up with AD months, and the gap changes from year to year. A tithi follows the Moon and moves even more. Tithi recalculates both every year.
Can I add a shraddha if I only know the tithi?
Yes. Choose Tithi only and pick the lunar month, paksha and tithi, for example Kartik Krishna Tritiya. Tithi shows the next three dates before you save.
Can I share dates with my family?
Yes. Share a person, a tag or a single entry by email, as viewer or editor. The invite email has a link to create an account; once accepted, the shared dates appear on their dashboard and in their calendar. Each person can hide a share from their dashboard or keep it out of their calendar.
Can Tithi remind me by email?
Yes. Turn on email reminders in Account settings for every entry, or on a single entry. You get one email a morning (about 6:15 Nepal time) listing what is today and what your reminders say is coming, in English or Nepali.
How does Tithi calculate dates?
Dates are stored in Bikram Sambat (2000 to 2090 BS). Tithis are computed astronomically at sunrise in Kathmandu, with month names as Nepali patros print them (Purnimanta). In a year with an adhik month, the date falls in the nija month.
Does Tithi cost anything?
Tithi is free for now.
Can Tithi read my Google Calendar?
No. Sign-in shares only your name, email and profile picture. If you connect Google Calendar, Tithi can manage only the separate Tithi calendar it creates, never your other calendars.
Do I need Google Calendar?
No. Apple Calendar, Outlook and other calendar apps can subscribe to your private feed link, and the dashboard always shows the next 30 days.
About
Tithi is a personal project by Bibek Aryal. It started from a simple gap: families keep birthdays by BS date and shraddha by tithi, but daily life runs on Google Calendar, which cannot repeat either one.
So Tithi does the patro work each year and hands the result to your calendar. It is free for now, with no ads and no trackers, in English and Nepali.
Read how tithi and Bikram Sambat workAdd the first birthday in a minute.
Google shares only your name, email and profile picture with Tithi. It cannot see your calendar, contacts or mail.