A lunar eclipse (*chandra grahan*) occurs at the full Moon when Earth's shadow falls on the Moon. Unlike a solar eclipse, a lunar eclipse is safe to view with the naked eye and is visible from the entire night-side of the planet at once.
✦ Sutak for Chandra Grahan
For a lunar eclipse, the sutak period is nine hours before the eclipse begins. It ends when the eclipse ends. This is shorter than the twelve hours observed for a solar eclipse — the classical reasoning is that the Moon governs the mind and the lighter sutak corresponds to the lighter celestial actor.
✦ What is Done
- ✦**Pre-sutak bath** and **post-eclipse bath** are both prescribed.
- ✦**Mantra-japa** during the eclipse — particularly Moon-related mantras (*Chandra beej, Om Som Somaya Namah*) and the Mahamrityunjaya.
- ✦**Tulsi or kusha** placed in stored food and water.
- ✦**Charity after the eclipse** — silver, white grains (rice), white cloth, sugar, milk are traditionally associated with the Moon.
- ✦**Reading sacred texts** — the Bhagavad Gita, Sundarkand, or Vishnu Sahasranama is considered apt for the contemplative window.
✦ What is Avoided
Cooking and consuming fresh food during sutak; sleeping during the eclipse itself; cutting, sewing or initiating new business activity; idol worship inside the sanctum.
✦ When the Eclipse is Not Visible Locally
Classical opinion is divided. Most authorities hold that sutak applies only when the eclipse is visible from one's location. If it is below the horizon for your region, ordinary routine continues. Reliable panchangs and observatories publish visibility for each city.
✦ Pregnant Women
The traditional advice — rest, avoid sharp implements, take the post-eclipse bath — is gentle and harmless. Modern medicine identifies no causal mechanism by which the eclipse could affect the foetus, but the prescribed rest is not a bad idea.