The Sothic cycle or Canicular period is a period of 1,461 Egyptian civil years of 365 days each or 1,460 Julian years averaging 365+1⁄4 days each. During...

many of the assumptions used with the Sothic Cycle, and as a result experts have moved away from relying on this Cycle. For example, Donald B. Redford, in...

The Metonic cycle or enneadecaeteris (from Ancient Greek: ἐννεακαιδεκαετηρίς, from ἐννεακαίδεκα, "nineteen") is a period of almost exactly 19 years after...

Milankovitch cycles describe the collective effects of changes in the Earth's movements on its climate over thousands of years. The term was coined and...

recorded date during the reign of Senusret III can be correlated to the Sothic cycle, consequently, many events during this dynasty frequently can be assigned...

intercalary, embolismic, or leap month. Their months are based on the regular cycle of the Moon's phases. So lunisolar calendars are lunar calendars with –...

years, it began to slowly cycle backwards through the solar year. Sirius itself, about 40° below the ecliptic, follows a Sothic year almost exactly matching...

461 calendar years (see Sothic cycle). Thus, the Armenian year 1461 (Gregorian & Julian 2011) completed the first Sothic cycle, and the Armenian Calendar...

Mesoamerican calendars – Metonic cycle – Milankovitch cycles – Mira – Moon – Nutation – Orbit – Orbital period – Saros cycle – Sothic cycle – Secularity – Sidereal...

The sexagenary cycle, also known as the stems-and-branches or ganzhi (Chinese: 干支), is a cycle of sixty terms, each corresponding to one year, thus a...