If you did not previously earn them, you may still complete challenges you missed from past years for full PD credit (90 minutes) and half the amount of points- 50! There is no “On-Time” bonus for past monthly challenges.
One exception to this is the introductory “Challenge Accepted” Badge (the 2019-2020 Jan Tool Badge) which we encourage anyone new to the Oakwood Tech Challenge to do first. This challenge is still worth 100 points.