Well not entirely, it doesn't take into account sidereal adjustments due to tida...

tankenmate on May 5, 2017 | parent | context | favorite | on: The Patek Philippe Caliber 89 and Horology’s Easte...

Well not entirely, it doesn't take into account sidereal adjustments due to tidal shifts or the perturbations of the three body problem (the other planets / moons in the Solar system). But outside of those issues it is accurate to 10,000 years.