This adventure is gorgeous, top to bottom, and the art is spot-on for the Appendix N era. (Honestly, it's better than 99% of Judges Guild stuff.)
I really like the use of the hourglass to add time travel shenanigans.
I would like a little more specificity on Time's Needle (the sword), which is really potent and, as written, I could see arguments over interpretations of its powers.