Today's cosmic note

Which graha a reading rests on is settled by how far that graha moves in the interval being read. Over a day the Moon covers about thirteen degrees and nothing else covers even one. Over seven days the Moon covers three rashis while Saturn covers under a quarter of a degree, so a week is still a Moon reading, only a wider one. Over thirty days the Sun covers 29.6 degrees — a rashi is thirty — so a month contains exactly one sankranti, and that ingress, not the Moon, is what makes one month unlike the next. Over 365 days Jupiter covers 30.3 degrees and changes rashi once, while the Sun goes all the way round and finishes where it began.

Four intervals and three grahas between them: the Moon carries the day and the week, the Sun carries the month, Jupiter carries the year, and each graha drops out of the reading one scale above its own. Every hub below shows the arithmetic for its own interval rather than asking to be believed.

Tomorrow is a different question from today, and not only because the date changes. The Moon crosses a rashi roughly every two and a quarter days, so on some days tomorrow's position is today's and on others it is not — and it is the Moon's rashi, counted from yours, that the classical daily indicator rests on. That count is Chandra Bala, and its most widely observed case is Chandrashtama: the Moon in the eighth rashi from your own, which comes round for about two and a half days every lunar month for everybody, on dates that depend only on your Moon sign.

Each page below gives tomorrow's tithi and nakshatra, where the Moon will stand relative to that rashi, the dated Chandrashtama windows across the whole two-year panchang, how to spot one in any printed panchang, and the Tara Bala wheel a muhurta weighs alongside it. No day is scored out of a hundred, because no system of Jyotish produces such a number.