The Mauni Amavasya is a day when sun, moon, Venus and Mercury are in the zodiac of Capricorn, a rare but perfect alignment of planets, devotees believe.
BBC: Spiritual cleansing at Mela Bathers at Mela
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Some say all amavasyas - or new moon nights - are auspicious for bathing in the Ganges, but Mauni (silent) Amavasya is also special as many pilgrims do not speak until they have had their bath.
BBC: Spiritual cleansing at Mela Bathers at Mela
词源
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Amavasya:
From Sanskrit ????????? ?(amāvāsyā, “day of the new moon”)