Reformation of 1582 it was superseded by the Epacts

Definition

This historical phrase refers to the Gregorian calendar reform introduced in 1582 and to the use of epacts in revised calendrical calculations. An epact is a number representing the approximate age of the Moon on a designated date. Epacts helped calendar makers coordinate lunar months with the solar year, especially when determining the ecclesiastical date of Easter. The wording likely describes an older lunar reckoning method that was replaced or revised under the reformed system.

Astrological Meaning

In astrology, the phrase belongs to the history of calendars and astronomical timekeeping rather than to natal interpretation. Astrologers require reliable dates and consistent planetary positions, so changes from the Julian calendar to the Gregorian calendar can affect the conversion of historical birth dates, event charts, and older records. Epacts concern calendar-based lunar reckoning; they are not substitutes for calculating the Moon’s exact zodiacal longitude in a horoscope.

Why It Matters

Understanding the 1582 reform helps prevent chronological errors when studying early charts or reconstructing historical events. The Gregorian calendar was adopted at different times in different countries, making location and local calendar usage important. An astrologer examining an old date may therefore need to establish whether it was recorded in the Julian or Gregorian system before calculating the chart. Epacts also illustrate the close historical relationship among astronomy, astrology, religious calendars, and civil timekeeping.

Related Encyclopedia Entries

• Traditional Astrology
• Astrological Terminology
• Natal Chart
• Gregorian Calendar
• Julian Calendar
• Epact