New Delhi, Sept. 23 -- Bank customers across India face a potential five-day disruption to branch banking starting September 26, as a nationwide strike by bank employees lands right after a weekend closure.

Here's why the strike is happening, and a day-by-day look at which dates banks will be open or shut this month:

The United Forum of Bank Unions (UFBU), an umbrella body of seven unions representing close to 90% of India's bank officers and staff, has called a three-day nationwide strike on September 28, 29 and 30.

The unions are protesting the Department of Financial Services' latest directive, issued on August 21, asking banks to implement a revised Performance Linked Incentive (PLI) scheme that unions say was changed unilaterally ...