Explanation:

• In India, the National Productivity Day is observed every year on February 12 by the National Productivity Council (NPC).
• Theme of National Productivity Day 2021 is Udyog Manthan for Productivity.
• Additionally, the week from February 12 to 18 is observed as the National Productivity Week, to create awareness about productivity, so that maximum output with optimum utilization of resources can be planned and achieve.