With the last day of Bangla month Poush being over officially on Sunday, the residents of Old Dhaka are all set to engage in flying kites and lanterns, and firework display to celebrate Poush Shankranti, also known as Shakrain, on Monday. Poush Shankranti which marks the end of Bengali month Poush is celebrated through the Shakrain festival. Dates of the event vary according to different localities.…