Commemorating ’today’. What is it?

Cracked by: Sumanth Patlolla, rickde, Bharath, Amarendra Kumar, Rogi, Ananth, badideabear, Dibyo, Bipin Banavalikar, KK, raklodramA, Anjul, Manish Achuth, Logik, Raghuvansh and mankuTimma