Weton Calculator
In Javanese tradition, the day you were born isn't just a date, it's a meeting point of two cycles, the seven-day week and the five-day pasaran. Together they form your weton, a rhythm that returns every 35 days.
Unlike astrology, you don't need your birth time, just your date. Enter it below to find your weton and your neptu, and read it the way my grandparents did, as a reference point, not a verdict.
Find your weton
No birth time needed. Just your date.
Calculated in your browser. Your birth date isn't stored or sent anywhere.
Your weton
Your weton is a map, not a verdict.
Your weton returns every 35 days. Your next ones:
Some people mark this day quietly, here's how wetonan works.
Read next
Go deeper
Weton Basics walks you through the whole system, pasaran, neptu, roso, at your own pace. Or book a personal reading and we'll look at your weton together.
How your weton is calculated
Every day carries two names, a weekday and a pasaran day. The five pasaran days, Legi, Pahing, Pon, Wage, and Kliwon, run alongside the seven-day week, so the same pairing comes back every 35 days.
Each day has a number, and adding the two gives your neptu:
| Day | Neptu | Pasaran | Neptu |
|---|---|---|---|
| Minggu (Sunday) | 5 | Legi | 5 |
| Senin (Monday) | 4 | Pahing | 9 |
| Selasa (Tuesday) | 3 | Pon | 7 |
| Rabu (Wednesday) | 7 | Wage | 4 |
| Kamis (Thursday) | 8 | Kliwon | 8 |
| Jumat (Friday) | 6 | ||
| Sabtu (Saturday) | 9 |
New to all of this? Start with the Javanese Cosmology Guide.
Want to go further?
Weton Basics is a beginner's guide to Javanese time and character, pasaran, neptu, and roso, to read at your own pace. If you'd rather talk it through, book a personal reading and we'll look at your weton together.
