The Trinamool Congress will celebrate Khela Hobe Diwas today across West Bengal and in Tripura -- the slogan that became the anthem of its successful battle against the BJP in the just concluded Assembly elections. Chief minister Mamata Banerjee had declared August 16 as Khela Hobe Divas on July 21, the Trinamool's annual Martyrs' Day, when she also unveiled the Trinamool's plans to expand beyond Bengal's borders and called for Opposition unity to overthrow the BJP government in 2024.