KOLKATA: Brace for a four-day bank closure — one of the longest such breaks in recent times — starting Saturday till Tuesday next week. The bank strike called by the United Forum of Bank Unions, if not called off in the next 72 hours, would result in closure of bank branches for four days (March 13-16) and ATMs for two days (March 16-17). This is because March 13 happens to be the second Saturday of the month and the strike call has been given for March 15 and 16. Rajen Nagar, president of AIBEA, and general secretary of BPBEA, pointed out that this week and the next week would be marked as strike by financial sector employees nationwide.