A popular festival celebrating Gāṇeśa's birthday. In Maharashtra it is held on the fourth day (catūrthi) of the bright lunar fortnight in Bhādrapada/Prauṣṭhapada (August–September); but in Vārāṇasī, for instance, during Māgha (January–February). The festival, which may last for up to ten days, involves the domestic worship of temporary, painted clay images of Gaṇeśa, as well as the setting up of more elaborate, sponsored tableaux, all of which are subsequently ritually immersed in tanks, rivers, or the sea, to mark the conclusion of the celebrations. This also marks the time when business people and students present their written accounts and books to the god (as the scribe of the Mahābhārata) to ensure good fortune. See also Tilak, Bala Gangadhara.