How many 21 day challenges are there?

This is a simple question:

So I made 2 accounts, one with the blocky house icon and one with another LightHouseLabs thing. The block house icon one says the data challenge starts in 2 days, while the other site is a coding challenge and says “Starting November 1, you’ll have 21 days to build a coding habit with a daily Javascript coding challenge.” but thats from 2019.

Are these two separate challenges? When does the coding challenge one start

Now I’m confused, how many challenges are there???