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Discover why the Gregorian calendar is considered the most accurate calendar in the world and how it improved on previous systems.

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Learn about the optical lattice clock, the most precise clock on Earth, and its scientific implications.

Discover why Earth's orbit takes about 365.25 days and learn about leap years in this engaging Q&A.

Discover why Norway experiences 6 months of continuous daylight and darkness, explained simply.

Discover why a day isn't always 24 hours due to Earth's rotation differences and adjustments like leap seconds.

Discover why a year on Earth is 365 days long and learn about leap years that adjust our calendar.