Inspired by u/kturker92's inverted countdown for Tears of the Kingdom, I forked it for Starfield! Here's a description of how it works, from the creator:

Its basically how much 1 day of waiting is compared to the journey we have left. If there's 1000 days left, 1 more day of waiting is insignificant (0.1% of the rest of the journey) If there's 1 day left, 1 more day of waiting is all that's left of the journey! 100% But if there is no journey left, 1 more day of waiting is.. infinite journeys hahah

We're getting pretty close to only one month left of waiting! :)