"Unraveling the Mysteries of Leap Day: From Party Planning to Historical Confusion"

Judah Levine, head of the Network Synchronization Project at NIST, explains that Leap Day was introduced by Julius Caesar to align the calendar with the natural world, ensuring that the spring equinox coincided with the spring season for harvest festivals like Passover and Easter. This adjustment helps synchronize the world's clocks with each other and with the astronomical cycle, demonstrating that Leap Day is more than just a calendrical adjustment—it's about keeping major holidays from colliding.