The visarjan (immersion) of Ganesh idols in Mumbai typically occurs on different days depending on the specific idol and the type of celebration. One-and-a-half day Ganpati: Visarjan usually takes place on the second day after the installation of idols for one and a half days. Three-day Ganpati: Idols installed for three days are typically immersed on the third day. Five-day Ganpati: Visarjan often occurs on the fifth day for idols installed for five days. Seven-day Ganpati: Idols installed for seven days are immersed on the seventh day. Ten-day Ganpati: The most common celebration duration, idols installed for ten days are usually immersed on the tenth day, also known as "Anant Chaturdashi." These are general guidelines, and the exact timing may vary depending on the traditions followed by individual households, Ganpati associations, and the local authorities. Additionally, the immersion process may extend over a few days due to the large number of idols in Mumbai, with some being immersed earlier and others on the specified days.