Leap Year

Definition

A leap year is a calendar year containing an extra day, February 29, to keep the civil calendar aligned with Earth’s approximately 365.24-day orbit around the Sun. In the Gregorian calendar, most years divisible by four are leap years, except century years not divisible by 400.

Astrological Meaning

A leap year is a calendrical adjustment rather than an astrological influence, so it does not carry an inherent planetary meaning or create a distinct personality type. Astrologers nevertheless account for the added day when calculating natal charts, transits, progressions, returns, and historical events. A person born on February 29 is interpreted through the usual chart factors—exact birth time, location, planetary positions, houses, and aspects—rather than through the rarity of the date alone.

Why It Matters

Understanding leap years helps prevent date-conversion and timing errors, especially in ephemeris work or research spanning different calendar systems. It also clarifies that a solar return is based on the moment the transiting Sun reaches its natal longitude, not simply the observance of a civil birthday. Accurate calendar handling supports more reliable chart calculation without assigning unsupported symbolism to the extra day.

Related Encyclopedia Entries

• Traditional Astrology
• Astrological Terminology
• Natal Chart
• Ephemeris
• Solar Return