BLUF

The Earth's orbit around the Sun governs the seasons, and the 2000-year-old Julian calendar incorporated Leap Years to align with them.

Summary

  1. Discrepancies developed over time.
  2. Historical dates often unreliable due to diverse calendars.
  3. 1582 saw the Gregorian calendar replace Julian calendar inaccuracies.
  4. Ongoing need for future adjustments.

References