Javanese Weton

This calculator needs only a date of birth. From it, the page works out two things: which day of the seven-day week you were born on, the saptawara, and which day of the five-day market cycle, the pasaran or pancawara. The pasaran runs Legi, Pahing, Pon, Wage, Kliwon and back to Legi without a break, so every calendar date sits at one point in each cycle. That pair is your weton. Seven and five only line up again every 35 days, which is why there are exactly 35 wetons.

Each day carries a fixed neptu. In the week, Sunday counts 5, Monday 4, Tuesday 3, Wednesday 7, Thursday 8, Friday 6 and Saturday 9. In the pasaran, Legi counts 5, Pahing 9, Pon 7, Wage 4 and Kliwon 8. Your total neptu is simply the two added together, so it always lands between 7 and 18. Beneath the result, the page also gives the next date your weton comes round, a 35-day return that some Javanese households still mark alongside, or instead of, the yearly birthday.

Take 14 March 1990. It was a Wednesday, shown on the page by its calendar name Buda and called Rabu in everyday Javanese. Counted forward from a fixed reference date, the pasaran for that day is Legi. The weton is therefore Buda Legi, or Rabu Legi in everyday speech, and the neptu is 7 for Wednesday plus 5 for Legi, a total of 12.

The compatibility panel asks for a second birth date. It adds both people's neptu, divides by 9 and keeps the remainder, from 0 to 8. Each remainder has a traditional label, and the page sorts the nine labels into five broader ratings. Someone with 12 paired with someone with 14 gives 26, which leaves 8. In Java, sums like this are one input when families talk through a match or settle on a wedding day, set beside the advice of elders, religious practice and the couple's own wishes. An awkward remainder is usually treated as something to handle with care, not as a verdict.

The weekday and pasaran descriptions draw on primbon-style associations of planet, element and direction. Read them as prompts for reflection rather than a profile to live up to, and use the 35-day return, if you like, as a regular moment to take stock. The method shows where a date sits in two old calendar cycles and what Javanese custom attaches to it; it cannot tell you how a life or a relationship will turn out.