Fabulous February has 28 or 29 days in order to keep the calendar year aligned with the solar year. The solar year, which is the time it takes for the Earth to complete one orbit around the Sun, is about 365.25 days long. To account for this fractional part, a leap year is added every four years.
In a leap year, February has 29 days instead of the usual 28. This extra day is added because the Earth’s orbit around the Sun is actually closer to 365.2425 days. By adding an extra day every four years, we come closer to aligning the calendar year with the solar year.
However, there is a further adjustment to this rule. Years that are divisible by 100 are not leap years unless they are also divisible by 400. This rule helps correct for the slight discrepancy caused by the 365.2425-day approximation. So, the year 2000 was a leap year because it is divisible by 400, but the years 1900, 2100, and 2200 are not leap years despite being divisible by 4.
These adjustments help maintain a more accurate alignment between the calendar and the Earth’s orbit around the Sun, ensuring that the seasons stay in sync with our calendar over the long term.
Cover Image credit: via Freepik
© Blue Dragon (Author and Writer) – 2023
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