2015 Moon Phases Calendar

December 2012 Last Quarter Moon
Thursday, Dec. 6, 2012, 10:31 a.m. EST. The last or third quarter moon rises around 11:30 p.m. and sets around 12:15 p.m. It is most easily seen just after sunrise in the southern sky.
Credit: Starry Night Software

Editor's note: The next solar eclipse will occur on Sunday, Sept. 13, 2015. It will be a partial solar eclipse that will be visible primarily from South Africa and Antarctica. The next lunar eclipse will be a total lunar eclipse on Sept. 27. It will occur while the moon is at perigee, making it a rare Supermoon Blood Moon lunar eclipse. Such an event won't happen again until 2033.

Some nights when we look up at the moon, it is full and bright; sometimes it is just a sliver of silvery light. These changes in appearance are the phases of the moon. As the moon orbits Earth, it cycles through eight distinct phases. The four primary phases occur about a week apart.

Lunar calendar for 2015

Times and dates are in Universal Time. Subtract five hours to get Eastern U.S. time.

New Moon 1st Quarter Full Moon Last Quarter
        Jan. 5 04:53 Jan. 13 09:47
Jan. 20 13:14 Jan. 27 04:48 Feb. 3 23:09 Feb. 12 03:50
Feb. 18 23:47 Feb. 25 17:14 Mar. 5 18:06 Mar. 13 17:48
Mar. 20 09:36 Mar. 27 07:43 Apr. 4 12:06 Apr. 12 03:44
Apr. 18 18:57 Apr. 25 23:55 May 4 03:42 May 11 10:36
May 18 04:13 May. 25 17:19 Jun. 2 16:19 Jun. 9 15:42
Jun. 16 14:05 Jun. 24 11:03 Jul. 2 02:20 Jul. 8 20:24
Jul. 16 01:24 Jul. 24 04:04 Jul. 31 10:43 Aug. 7 02:03
Aug. 14 14:54 Aug. 22 19:31 Aug. 29 18:35 Sep. 5 09:54
Sep. 13 06:41 Sep. 21 08:59 Sep. 28 02:50 Oct. 4 21:06
Oct. 13 00:06 Oct. 20 20:31 Oct. 27 12:05 Nov. 3 12:24
Nov. 11 17:47 Nov. 19 06:27 Nov. 25 22:44 Dec. 3 07:40
Dec. 11 10:29 Dec. 18 15:14 Dec. 25 11:11    

Phases of the moon

The moon, like Earth, is a sphere, and it is always half-illuminated by the sun. However, as the moon travels around Earth, we see more or less of the illuminated half. The moon's phases describe how much of the moon's disk is illuminated from our perspective.

New moon: The moon is between Earth and the sun, and the side of the moon facing toward us receives no direct sunlight; it is lit only by dim sunlight reflected from Earth.

Waxing crescent: As the moon moves around Earth, the side we can see gradually becomes more illuminated by direct sunlight.

First quarter: The moon is 90 degrees away from the sun in the sky and is half-illuminated from our point of view. We call it "first quarter" because the moon has traveled about a quarter of the way around Earth since the new moon.

As the Earth and moon orbit the sun together, the moon goes through several ‘phases.’ explains the 8 major named phases of the moon.
Credit: Karl Tate,

Waxing gibbous: The area of illumination continues to increase. More than half of the moon's face appears to be getting sunlight.

Full moon: The moon is 180 degrees away from the sun and is as close as it can be to being fully illuminated by the sun from our perspective. The sun, Earth and the moon are aligned, but because the moon’s orbit is not exactly in the same plane as Earth’s orbit around the sun, they rarely form a perfect line. When they do, we have a lunar eclipse as Earth's shadow crosses the moon's face.

Waning gibbous: More than half of the moon's face appears to be getting sunlight, but the amount is decreasing.

Last quarter: The moon has moved another quarter of the way around Earth, to the third quarter position. The sun's light is now shining on the other half of the visible face of the moon.

Waning crescent: Less than half of the moon's face appears to be getting sunlight, and the amount is decreasing.

Finally, the moon is back to its new moon starting position. Now, the moon is between Earth and the sun. Usually the moon passes above or below the sun from our vantage point, but occasionally it passes right in front of the sun, and we get a solar eclipse. [Infographic: How Moon Phases Work]

More from
Tim Sharp, Reference Editor

Tim Sharp

Tim Sharp is the Reference Editor for He manages articles that explain scientific concepts, describe natural phenomena and define technical terms. Previously, he was a Technology Editor at and the Online Editor at the Des Moines Register. He was also a copy editor at several newspapers. Before joining Purch, Tim was a developmental editor at the Hazelden Foundation. He has a journalism degree from the University of Kansas. Follow Tim on and @TimothyASharp
Tim Sharp on
Contact @TimothyASharp on Twitter Contact Tim Sharp by EMail