Saturday bank holiday: Are banks open or closed on September 21?

Banks are closed on the second and fourth Saturdays of the month, as well as on Sundays and other regional and national holidays. This is as per rules established by the Reserve Bank of India (RBI).
Banks are operational on every first, third, and fifth Saturday unless there is a designated holiday. The RBI designates certain holidays under the Negotiable Instruments Act, Real-Time Gross Settlement (RTGS) holidays, and Banks’ Closing of Accounts.
Since Saturday, September 21, is the third Saturday of the month, banks will be open as banks are open on the first, third, and fifth Saturdays of the month.
Yes, customers can utilize Internet banking, SMS banking, and WhatsApp banking even on bank holidays even though physical banking services are not provided.
In September, banks will remain closed for 15 days, depending on the state. Bank closures are scheduled for Tirubhav Tithi of Srimanta Sankardeva, Ganesh Chaturthi, First Onam, Milad-un-Nabi or Id-e Milad, Indrajatra/Id-e-Milad, Pang-Lhabsol, Friday following Eid-i-Milad-ul-Nabi, Sree Narayana Guru Samadhi Day and Birthday of Maharaja Hari Singh Ji.