Partial solar eclipse
Wednesday, 5 December 2029
The moon covers only part of the sun's disc. From the ground the light changes little; without a filter it is easy not to notice one is happening at all.
- Type
- Partial solar eclipse
- Greatest eclipse
- 08:34 PM IST
- Magnitude
- 0.891
- Gamma
- -1.061
- Saros series
- 123
- Sutak begins
- 12 hours before, where visible
Sutak — and the rule most sites get wrong
Sutak is the period of abstention before and during an eclipse. It begins twelve hours before a solar eclipse and nine hours before a lunar one, and it ends when the eclipse does — after which the household bathes, changes water, and resumes.
The rule that matters, and that is very often omitted: sutak applies only where the eclipse is actually visible. An eclipse that happens below your horizon is not observed. This is not a modern relaxation — it is the classical position, and it is why a Chennai household and a London household can be looking at the same eclipse date and correctly doing entirely different things.
This is also why we do not print a sutak start time for your city. Determining whether an eclipse is visible from a given place, and when it begins and ends there, requires Besselian elements — a different and much heavier computation than the one behind the rest of this site. Publishing a confident-looking sutak window that turns out to be for an eclipse below your horizon would cause a household to discard food and close a shrine for nothing. We would rather give you the astronomical facts and tell you where the boundary of our knowledge is.
What is observed
- Cooking and eating stop for the sutak period. Food already prepared is either eaten before it begins or set aside, and tulasi or darbha grass is placed in stored water and cooked food.
- Temples close their doors and the images are not viewed. They reopen after the eclipse, once the sanctum has been cleaned and the deity bathed.
- The hours themselves are given to japa, to reading, and to charity. Mantra recited during an eclipse is held to carry unusual weight, and many practitioners specifically reserve initiation-level practice for these hours.
- When the eclipse ends, the household bathes, changes the water in the house, and gives something away — grain, cloth or coin. Only then does normal activity resume.
Who is exempt
Children, the elderly, the ill, and pregnant and nursing women are exempt from the fast, as they are from every fast in the tradition. The widely repeated instructions aimed specifically at pregnant women — not to go outside, not to use a knife — are folk custom rather than shastra, and there is no medical basis for them. A pregnant woman who ignores them entirely is not doing anything wrong.
Looking at a solar eclipse
Never look at a partial or annular solar eclipse without a certified solar filter, and never through binoculars, a camera or a telescope without one made for the purpose. Sunglasses, exposed film, smoked glass and CDs are all unsafe. The retina has no pain receptors, so damage happens without warning. Totality itself — and only the seconds of totality, on the narrow track where it occurs — can be viewed with the naked eye.