Electional astrology

Best Days — December 2040

The Moon sets the daily rhythm. Waxing days (after the New Moon) favour starting and building; waning days favour finishing and releasing; and when the Moon is void-of-course, tradition says hold off on launching anything new.

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★ Best days this month: Dec 3 · Sagittarius Dec 4 · Sagittarius · New Moon Dec 5 · Capricorn Dec 17 · Gemini Dec 18 · Gemini · Full Moon Dec 19 · Cancer Dec 20 · Cancer
Dec 01 Low 🌙 Scorpio · Waning Crescent

Good for rest, retreat and winding down before the new cycle.

Dec 02 Low 🌙 Scorpio · Waning Crescent

Good for rest, retreat and winding down before the new cycle.

Dec 03 Best 🌙 Sagittarius · New Moon

Good for fresh starts, setting intentions and new ventures.

Dec 04 Best 🌙 Sagittarius · New Moon · New Moon

Good for fresh starts, setting intentions and new ventures.

Dec 05 Best 🌙 Capricorn · New Moon

Good for fresh starts, setting intentions and new ventures.

Dec 06 Good 🌙 Capricorn · Waxing Crescent

Good for building momentum on something you've begun.

Dec 07 Neutral 🌙 Capricorn · Waxing Crescent · void

Good for building momentum on something you've begun. The Moon is void-of-course — hold off on launching anything new.

Dec 08 Good 🌙 Aquarius · Waxing Crescent

Good for building momentum on something you've begun.

Dec 09 Neutral 🌙 Aquarius · First Quarter · void

Good for pushing through a decision or obstacle. The Moon is void-of-course — hold off on launching anything new.

Dec 10 Good 🌙 Pisces · First Quarter · First Quarter

Good for pushing through a decision or obstacle.

Dec 11 Neutral 🌙 Pisces · First Quarter · void

Good for pushing through a decision or obstacle. The Moon is void-of-course — hold off on launching anything new.

Dec 12 Good 🌙 Aries · First Quarter

Good for pushing through a decision or obstacle.

Dec 13 Good 🌙 Aries · Waxing Gibbous

Good for refining and improving toward a goal.

Dec 14 Good 🌙 Taurus · Waxing Gibbous

Good for refining and improving toward a goal.

Dec 15 Good 🌙 Taurus · Waxing Gibbous

Good for refining and improving toward a goal.

Dec 16 Good 🌙 Gemini · Waxing Gibbous

Good for refining and improving toward a goal.

Dec 17 Best 🌙 Gemini · Full Moon

Good for launches, visibility, culmination and celebration.

Dec 18 Best 🌙 Gemini · Full Moon · Full Moon

Good for launches, visibility, culmination and celebration.

Dec 19 Best 🌙 Cancer · Full Moon

Good for launches, visibility, culmination and celebration.

Dec 20 Best 🌙 Cancer · Full Moon

Good for launches, visibility, culmination and celebration.

Dec 21 Good 🌙 Leo · Waning Gibbous

Good for sharing, teaching, gratitude and giving back.

Dec 22 Good 🌙 Leo · Waning Gibbous

Good for sharing, teaching, gratitude and giving back.

Dec 23 Good 🌙 Leo · Waning Gibbous

Good for sharing, teaching, gratitude and giving back.

Dec 24 Good 🌙 Virgo · Waning Gibbous

Good for sharing, teaching, gratitude and giving back.

Dec 25 Low 🌙 Virgo · Last Quarter · void

Good for releasing, clearing out and re-evaluating. The Moon is void-of-course — hold off on launching anything new.

Dec 26 Neutral 🌙 Libra · Last Quarter · Last Quarter

Good for releasing, clearing out and re-evaluating.

Dec 27 Neutral 🌙 Libra · Last Quarter

Good for releasing, clearing out and re-evaluating.

Dec 28 Neutral 🌙 Libra · Last Quarter

Good for releasing, clearing out and re-evaluating.

Dec 29 Low 🌙 Scorpio · Waning Crescent

Good for rest, retreat and winding down before the new cycle.

Dec 30 Low 🌙 Scorpio · Waning Crescent

Good for rest, retreat and winding down before the new cycle.

Dec 31 Low 🌙 Sagittarius · Waning Crescent

Good for rest, retreat and winding down before the new cycle.

Astro Planner — December 2040 PDF

These best days plus the month's full sky — phases, eclipses, ingresses, void windows and a day-by-day Moon guide — as one keep-and-print planner:

How to use this

For a fresh start — a launch, a first date, a new project — pick a waxing 'Best' or 'Good' day, ideally just after the New Moon, when the Moon is not void. To finish, release or let go of something, the waning days after the Full Moon are ideal. Avoid starting anything important while the Moon is void-of-course. For day-level timing within a chosen day, see planetary hours; for the month's lunations, see the astro calendar.

This calendar rates days by the Moon alone. The fuller classical method — the Ascendant, retrogrades, combustion and the hour — is set out in Electional Astrology, and the old rule on beginning with a growing Moon in Waxing vs Waning Moon.

Frequently asked questions

How are the best days chosen?

Each day is scored from the Moon's phase, sign and void-of-course status — the classic factors of electional astrology — to flag the month's most favourable days.

What is a void-of-course Moon?

It's the stretch after the Moon's last major aspect in a sign until it changes sign. Plans begun then often 'come to nothing', so those hours are usually avoided.

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