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Astronomy Event

Moon at Last Quarter

Thursday, August 6, 2026

The Moon reaches last quarter phase – rising in the east at around midnight and appearing high in the sky by sunrise.

Event Type
Moon Phase
Difficulty
Easy
Best Equipment
Naked eye, binoculars, or telescope
Dark Sky Needed
Depends on the target
Overview

Moon at Last Quarter

The Moon reaches last quarter phase – rising in the east at around midnight and appearing high in the sky by sunrise.

Learn

What Is a Moon Phase?

A Moon phase describes how much of the Moon’s sunlit side is visible from Earth.

As the Moon orbits Earth, the angle between the Sun, Moon, and Earth changes, creating phases such as new moon, first quarter, full moon, and last quarter.

Moon phases affect night-sky brightness and can strongly influence observing conditions.

Why It Matters

Why Moon Phases Matter for Observing

Bright Moon phases can wash out faint stars, galaxies, and nebulae.

New Moon periods are usually better for deep-sky observing and astrophotography.

Quarter phases can be excellent for lunar observing because shadows highlight craters, mountains, and surface detail.

Observing Guide

How To Use Moon Phases When Planning

  • Use new Moon dates for dark-sky deep-sky observing.
  • Use quarter Moon phases for detailed lunar observing.
  • Avoid bright Moon nights when targeting faint galaxies or nebulae.
  • Check moonrise and moonset times, not just the phase.
  • Plan targets on the opposite side of the sky from the Moon when possible.
Planning

How To Plan Around This Event

Use this event as a planning marker, then confirm your local weather, cloud cover, Moon conditions, and horizon visibility before observing.

Ephemeris can help you compare this event with your local observing forecast, tonight's visible targets, and your saved telescope rigs.

Questions

Common Questions About Moon at Last Quarter

When does Moon at Last Quarter occur?

Moon at Last Quarter is listed for August 6, 2026.

Can I observe this event from my location?

Visibility depends on your location, local weather, horizon, and timing. Check the event visibility notes and compare them with your local forecast.

What equipment should I use?

Recommended equipment for this type of event: Naked eye, binoculars, or telescope.

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