Who can chant the Viṣṇu Sahasranāma, and when is the best time?
it is open to all devotees; mornings, Thursdays and Ekādaśī are favourite times, but any calm time is good.
The Viṣṇu Sahasranāma, the thousand names of Viṣṇu, comes from the Anuśāsana Parva of the Mahābhārata. Tradition says Bhīṣma, lying on his bed of arrows, taught it to Yudhiṣṭhira as the simplest way to remember God. Ādi Śaṅkarācārya wrote a famous commentary on it, and it is loved in Vaiṣṇava, Smārta and many other homes.
It can be chanted by anyone with devotion. Many families chant it in the morning, on Thursdays, on Ekādaśī, or play it at dawn so the whole house hears it. The full recitation takes about 25–30 minutes at a steady pace.
If Sanskrit feels difficult, start with a recording and follow the text, or learn a few verses a week. Some read only the main 108 verses and skip the opening and closing portions on busy days — reading part of it with care is better than not reading at all.
Source: Mahābhārata, Anuśāsana Parva · Commentary by Ādi Śaṅkarācārya
Dharma Q&A — worship at home · Ask a Jyotishi your own question