Best Days to Start a Diet in 2027
The best day in each month of 2027 to start a diet or break a habit, by Western electional astrology. Here the usual rule flips: you want a waning Moon, to diminish rather than grow, applying to Saturn (discipline) or the Sun (vitality). Computed with the Swiss Ephemeris.
| Month | Best day | Score | Why this one |
|---|---|---|---|
| January | Fri, Jan 1 | 6 | Waning Moon in Scorpio applying to a sextile to the Sun, in a Saturn hour. |
| February | Fri, Feb 5 | 6 | Waning Moon in Aquarius applying to a sextile to Saturn, in a Sun hour. |
| March | Thu, Mar 4 | 6 | Waning Moon in Aquarius applying to a sextile to Saturn. |
| April | Thu, Apr 1 | 6 | Waning Moon in Aquarius applying to a sextile to the Sun. |
| May | Tue, May 4 | 6 | Waning Moon in Aries applying to a conjunction with Saturn. |
| June | Fri, Jun 4 | 6 | Waning Moon in Gemini applying to a conjunction with the Sun. |
| July | Fri, Jul 2 | 6 | Waning Moon in Gemini applying to a sextile to Saturn. |
| August | Sat, Aug 21 | 6 | Waning Moon in Aries applying to a conjunction with Saturn. |
| September | Wed, Sep 22 | 6 | Waning Moon in Gemini applying to a sextile to Saturn. |
| October | Tue, Oct 19 | 6 | Waning Moon in Gemini applying to a sextile to Saturn. |
| November | Fri, Nov 19 | 6 | Waning Moon in Leo applying to a trine to Saturn. |
| December | Sun, Dec 26 | 6 | Waning Moon in Sagittarius applying to a trine to Saturn. |
Best day shown by date; the exact best hour depends on your location. Run your city in the timing finder.
How these dates are chosen
Most elections want a waxing Moon, but breaking a habit is the exception. To reduce something, the tradition uses a waning Moon, shrinking as you want the craving to shrink, applying to Saturn (discipline, structure) or the Sun (will, vitality). Every date above sits on a waning Moon reaching toward restraint.
What to avoid
Avoid starting on a waxing Moon, which the tradition says feeds what you are trying to starve. Skip the days the Moon applies to Jupiter or Venus (indulgence), and give the eclipse seasons around Feb 6 and 20 and around Jul 18, Aug 2, and Aug 17 a miss, since resolve tends to wobble around them.
Breaking a habit for good?
Find the exact best window for your city in the free timing finder, or ask The Twelve Rooms for a reading that weighs the sky against your own chart.
Open the timing finderCommon questions
What is the best day to start a diet in 2027?
The strongest days fall on a waning Moon applying to Saturn or the Sun, since you want the habit to shrink. The table above gives the best such day in each month of 2027.
Why a waning Moon for a diet?
Because you want the thing to shrink, not grow. Electional astrology mirrors the intention in the sky: a waxing Moon for what you want more of, a waning Moon for what you want less of. Diets and habit-breaking take the waning Moon.
How are these dates calculated?
By Western electional astrology, computed with the Swiss Ephemeris in whole-sign houses. The exact best hour depends on your location, since the angles and planetary hours are local.
Does my own chart matter?
For the strongest result, yes. These dates rank the sky, which is the same for everyone. The single best date is the one that also speaks well to your own chart, which is the personalized reading.