Bank customers may be wondering whether they should visit their bank branch for work tomorrow, Friday, September 11, 2026, as the United Forum of Bank Unions (UFBU) has called for a nationwide bank strike.Even at a time when such bank strikes find no place in the Reserve Bank of India (RBI) holiday calendar, and banks such as State Bank of India (SBI) and Punjab National Bank (PNB) have issued just advisories for their customers, confusion about the status of bank holiday on September 11 is growing among many bank customers.Will bank branches be open or closed on September 11, 2026 due to the bank union strike?While banks have made arrangements to keep essential services running, customers may face disruptions in branch-related banking work. SBI and PNB have advised their customers to complete important transactions in advance and use digital banking channels, ATMs and other available services during the proposed strike.In a social media post on X, State Bank of India said that it has made necessary arrangements to ensure normal functioning of branches and offices on strike days.However, SBI has also cautioned that banking work may be impacted because of the proposed strike.Punjab National Bank has issued a customer advisory regarding the nationwide bank strike on September 11. Customers are advised to use digital banking services for essential transactions during the strike, including UPI payments, mobile banking, internet banking, ATMs and ADWMs, says PNBSBI has also asked customers to use automated teller machines (ATMs) and automated deposit cum withdrawal machines (ADWMs) for their cash requirements and Customer Service Points (CSPs) for available banking services.SBI customers have been advised to prefer digital banking channels, including internet banking, YONO, mobile banking and Unified Payments Interface (UPI).SBI advisory for September 11 proposed bank union strikeComplete important banking transactions before the strike date.Use ATMs/ADWMs for cash requirements.Use Customer Service Points (CSPs).Prefer internet banking, YONO, mobile banking, UPI and other digital channels.SBI has also expressed regret for any inconvenience caused to customers and thanked them for their understanding.Why have bank unions proposed strike for September 11, 2026?The UFBU has announced strikes as part of its demands concerning reforms in the banking sector. Among the key demands are the introduction of a five-day banking week and a review of the Performance Linked Incentive (PLI) scheme.The unions have also urged the government to fulfil its commitment to introduce a five-day banking week.Will banks be closed in Delhi for the BRICS summit?According to the RBI holiday calendar, September 11 is not a bank holiday in Delhi. Branches are likely to function normally even though government offices, schools, and some courts are shut.Also note that banks are closed on the second Saturday (September 12), followed by Sunday (September 13) and Monday (September 14) in some states due to religious festivals.