A new full-moon count. A beautiful day number. A symbolic Saturn year. Find the unusual anniversaries approaching for our collection of scientific lives and historic beginnings.
Updated from the current UTC date (25 October 2026). Showing 4 curated milestones in the next 365 days. Date-only records use a noon convention; same-day date estimates are included. Astronomical and planetary dates remain approximate.
The 100th astronomical full moon strictly after your starting moment.
The 100th astronomical full moon strictly after your starting moment. Calculated from the Sun–Moon phase geometry using Meeus’s true-phase algorithm. With no starting time, a moon on your starting date can affect the count; local noon is assumed.
An approximate trip-count based on Earth’s orbit, not a civil-calendar birthday.
Approximately 50 mean sidereal orbital periods of Earth (365.256 Earth days each). A symbolic anniversary, not an exact planetary return.
An approximate trip-count based on Earth’s orbit, not a civil-calendar birthday.
Approximately 50 mean sidereal orbital periods of Earth (365.256 Earth days each). A symbolic anniversary, not an exact planetary return.
An approximate trip-count based on Earth’s orbit, not a civil-calendar birthday.
Approximately 50 mean sidereal orbital periods of Earth (365.256 Earth days each). A symbolic anniversary, not an exact planetary return.