alarm-clock.org/moon/calendar

Moon Calendar — December 2028

The full moon in December 2028 is December 2, 2028 — the Cold Moon. Every day of the month is drawn below with its phase and how much of the disc is lit. Tap any day for that night's detail.

Dates and phases are shown in UTC until the page loads, then in your own time zone.

Primary phases in December 2028

PhaseWhenName
Full moon December 2, 202801:40 UTC Cold Moon
Last quarter December 9, 202805:38 UTC
New moon December 16, 202802:06 UTC
First quarter December 23, 202821:44 UTC
Full moon December 31, 202816:48 UTC Blue Moon

More moon for December 2028

Phase is the same worldwide, but moonrise and moonset depend on where you are — pick your city for tonight's times. See every phase in 2028, the full moon calendar with traditional names, or the other months. Sunrise and sunset for the same dates are on the sunrise & sunset pages.

When is the full moon in December 2028?

December 2, 2028 at 01:40 UTC — the Cold Moon. The calendar above converts that to your own time zone when it loads, which can move it to the day before or after.

When is the new moon in December 2028?

December 16, 2028 at 02:06 UTC. New moon is the darkest night of the month and the best one for stargazing.

Why does the calendar show a different date than another site?

A moon phase happens at a single instant everywhere on Earth, so the calendar date it lands on depends on your time zone. A full moon at 02:00 UTC is still the previous evening across the Americas. This page shows UTC before its JavaScript runs and your own dates afterwards.

What do the percentages mean?

How much of the moon's disc is lit at midday on that date — 0% at new moon, 100% at full. The shape drawn in each cell is the same figure as a picture.

💡 How do we make alarm-clock.org better? Share an idea →

We want alarm-clock.org to be the best countdown, reminder, and event site online. If you have an idea to make it better, we'd love to hear it.

Every suggestion is read and reviewed. We can't promise to act on them all, but they directly shape what we build next.