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Primary phases for 2025–2030, display time zone, monthly table and ICS
A factual calendar of four primary Moon phases, 2025–2030. Select an instant in UTC and the time zone used to display it. The monthly table and ICS contain the same tabulated phase events, not predictions about personal affairs.
Data range: primary phases 2025–2030; hourly illumination 2026 only.
Phase moments: Fred Espenak, NASA/GSFC, based on Jean Meeus’ Astronomical Algorithms (1998). NASA phase table (UT).
We reproduce the table to its published minute resolution; we do not claim accuracy to a second or a guaranteed one-minute error. In twelve selected 2026 checks against USNO, differences were 0 or 1 minute. This is a comparison of those cases, not an error bound for all dates. UT is represented as UTC for minute-resolution civil display, without a UT1–UTC correction. USNO 2026.
Illumination: the nearest available hourly NASA Scientific Visualization Studio sample for 2026 (DE421 ephemeris), shown with the sample time, not interpolated to your minute. The displayed percentage is rounded to one decimal place; that is display precision, not a measured accuracy. Outside 2026 it is unavailable. NASA SVS 2026.
Example: the table’s New Moon at 2026-10-10 15:50 UT appears as 18:50 in Europe/Moscow and 05:50 on October 11 in Pacific/Kiritimati. The astronomical event is the same; the civil date can differ. ICS stores UTC events with stable identifiers: your calendar chooses its own display zone. The mandatory seconds “00” are format padding; each event is a transparent one-minute marker, not a one-minute physical phase.
This is not a visibility, rise/set, eclipse or personal-advice calculator. The old Moon-sign estimate and mean-cycle lunar-day counter are not used here. No haircut, health, money or legal recommendations are inferred from the data. Dates and zones are not saved by this widget.
Explanation revised: 2026-10-18
The calendar shows four primary phases from the published NASA/GSFC table for 2025–2030. A time zone changes the civil date and time, not the event itself. Illumination uses the nearest hourly NASA SVS sample for 2026 only. Minute table resolution is not a proven one-minute accuracy guarantee. These astronomical data do not establish favorable dates for health, money or personal decisions.
Enter a valid YYYY-MM-DD date and UTC time, choose the display zone and press Show this instant. Separately choose the month of events in that zone. The table shows local time and source UT; use Download month (.ics) or Print calendar. ICS contains UTC markers, which your calendar displays in its own zone. There is no estimated fallback outside the supplied data.
This calendar is for checking published Moon-phase events and comparing UTC with a chosen display zone. It does not offer personal forecasts.
Phase data cover 2025–2030; hourly illumination covers 2026 only. Source resolution is not a guaranteed accuracy. No medical, financial or legal conclusions follow from these data.