The civic body further said that in view of IMD's "Red" alert, Municipal Commissioner Iqbal Singh Chahal has declared a holiday for all Municipal, Government and Private primary, secondary and higher secondary schools and all colleges in the Mumbai City and Suburbs for tomorrow, July 27. �� Mumbai School Holiday: All Government and Private Schools, Colleges To Remain Shut on July 27 as IMD Issues Red Alert Predicting Heavy Rainfall.