When is the best day to buy a car in September 2027?

The month's best stretch opens Tue, Sep 21, 2:00 AM EDT and holds until Thu, Sep 23, 12:00 AM EDT, scoring 64 against a base of 50, computed in America/New York (Eastern Time). Scores compare moments; they do not promise results.

How are these scores computed?

Every hour is rated on four factors — the Moon void-of-course, Mercury retrograde, the Moon's phase, and its next applying aspect for this kind of decision — then averaged per local day under a versioned config. These pages stop there, because a page has no location; the app adds a fifth factor, the Moon's house, once it knows where you are, which is what lets it name an hour rather than a day. Scores start at 50. Higher scores mean more favorable conditions under Orrery’s rules, not a higher chance of success. Check the times against your availability.

What does void-of-course mean?

The interval after the Moon's last exact major aspect in a sign, until it enters the next. Orrery uses a modern definition and assigns a score penalty to starts during this interval.

Sign / commit — September 2027

The best days to buy a car in September 2027.

Computed in America/New York (Eastern Time). Event and interval times include their Eastern Time zone label (EDT or EST). A different timezone shifts the day boundaries — the sky doesn’t change, but the local days it lands in can.

You’ve got the purchase on the calendar. Here is September 2027, scored for committing: every hour rated on the Moon void-of-course, Mercury retrograde, the Moon’s phase, and its next applying aspect for this decision — then averaged per day. Scores start at 50. Higher scores mean more favorable conditions under Orrery’s rules, not a higher chance of success. Check the times against your availability.

The month’s best stretch opens Tue, Sep 21, 2:00 AM EDT and holds until Thu, Sep 23, 12:00 AM EDT, scoring 64.

Amber rows below are the days that stretch touches. Scores compare moments; they do not promise results.

Rows list factors in that day’s hourly samples. An applying aspect’s exact date can fall on a later day.

Date	Day	Score	The computed sky
Sep 1	Wed	44	Waxing Moon (sampled hours)Void-of-course Wed, Sep 1, 2027, 9:28 PM EDT – Thu, Sep 2, 2027, 1:07 AM EDT
Sep 2	Thu	31	Applying Moon–Saturn opposition · exact Fri, Sep 3, 2027, 11:06 PM EDTWaxing Moon (sampled hours)Void-of-course Wed, Sep 1, 2027, 9:28 PM EDT – Thu, Sep 2, 2027, 1:07 AM EDT
Sep 3	Fri	32	Applying Moon–Saturn opposition · exact Fri, Sep 3, 2027, 11:06 PM EDTWaxing Moon (sampled hours)
Sep 4	Sat	41	Waxing Moon (sampled hours)Void-of-course Fri, Sep 3, 2027, 11:06 PM EDT – Sat, Sep 4, 2027, 3:44 AM EDT
Sep 5	Sun	37	Waxing Moon (sampled hours)Void-of-course Sun, Sep 5, 2027, 3:05 PM EDT – Mon, Sep 6, 2027, 10:01 AM EDT
Sep 6	Mon	40	Applying Moon–Saturn trine · exact Wed, Sep 8, 2027, 2:28 PM EDTWaxing Moon (sampled hours)Void-of-course Sun, Sep 5, 2027, 3:05 PM EDT – Mon, Sep 6, 2027, 10:01 AM EDT
Sep 7	Tue	58	Applying Moon–Saturn trine · exact Wed, Sep 8, 2027, 2:28 PM EDTWaxing Moon (sampled hours)
Sep 8	Wed	45	Applying Moon–Saturn square · exact Sat, Sep 11, 2027, 2:42 AM EDTApplying Moon–Saturn trine · exact Wed, Sep 8, 2027, 2:28 PM EDTWaxing Moon (sampled hours)Void-of-course Wed, Sep 8, 2027, 2:28 PM EDT – Wed, Sep 8, 2027, 8:11 PM EDT
Sep 9	Thu	34	Applying Moon–Saturn square · exact Sat, Sep 11, 2027, 2:42 AM EDTWaxing Moon (sampled hours)
Sep 10	Fri	34	Applying Moon–Saturn square · exact Sat, Sep 11, 2027, 2:42 AM EDTWaxing Moon (sampled hours)
Sep 11	Sat	42	Applying Moon–Saturn sextile · exact Mon, Sep 13, 2027, 3:19 PM EDTApplying Moon–Saturn square · exact Sat, Sep 11, 2027, 2:42 AM EDTWaxing Moon (sampled hours)Void-of-course Sat, Sep 11, 2027, 2:42 AM EDT – Sat, Sep 11, 2027, 8:49 AM EDT
Sep 12	Sun	54	Applying Moon–Saturn sextile · exact Mon, Sep 13, 2027, 3:19 PM EDTWaxing Moon (sampled hours)
Sep 13	Mon	44	Applying Moon–Saturn sextile · exact Mon, Sep 13, 2027, 3:19 PM EDTWaxing Moon (sampled hours)Void-of-course Mon, Sep 13, 2027, 3:19 PM EDT – Mon, Sep 13, 2027, 9:38 PM EDT
Sep 14	Tue	46	Waxing Moon (sampled hours)
Sep 15	Wed	43	Waning Moon (sampled hours)Waxing Moon (sampled hours)Void-of-course Wed, Sep 15, 2027, 7:03 PM EDT – Thu, Sep 16, 2027, 8:56 AM EDT
Sep 16	Thu	40	Applying Moon–Saturn conjunction · exact Sat, Sep 18, 2027, 11:40 AM EDTWaning Moon (sampled hours)Void-of-course Wed, Sep 15, 2027, 7:03 PM EDT – Thu, Sep 16, 2027, 8:56 AM EDT
Sep 17	Fri	48	Applying Moon–Saturn conjunction · exact Sat, Sep 18, 2027, 11:40 AM EDTWaning Moon (sampled hours)
Sep 18	Sat	44	Applying Moon–Saturn conjunction · exact Sat, Sep 18, 2027, 11:40 AM EDTWaning Moon (sampled hours)Void-of-course Sat, Sep 18, 2027, 11:40 AM EDT – Sat, Sep 18, 2027, 6:05 PM EDT
Sep 19	Sun	56	Waning Moon (sampled hours)
Sep 20	Mon	54	Waning Moon (sampled hours)Void-of-course Mon, Sep 20, 2027, 9:13 PM EDT – Tue, Sep 21, 2027, 1:05 AM EDT
Sep 21	Tue	61	Applying Moon–Saturn sextile · exact Wed, Sep 22, 2027, 11:35 PM EDTWaning Moon (sampled hours)Void-of-course Mon, Sep 20, 2027, 9:13 PM EDT – Tue, Sep 21, 2027, 1:05 AM EDT
Sep 22	Wed	64	Applying Moon–Saturn sextile · exact Wed, Sep 22, 2027, 11:35 PM EDTWaning Moon (sampled hours)
Sep 23	Thu	39	Applying Moon–Saturn square · exact Sat, Sep 25, 2027, 2:32 AM EDTWaning Moon (sampled hours)Void-of-course Wed, Sep 22, 2027, 11:35 PM EDT – Thu, Sep 23, 2027, 6:02 AM EDT
Sep 24	Fri	44	Applying Moon–Saturn square · exact Sat, Sep 25, 2027, 2:32 AM EDTWaning Moon (sampled hours)
Sep 25	Sat	58	Applying Moon–Saturn square · exact Sat, Sep 25, 2027, 2:32 AM EDTApplying Moon–Saturn trine · exact Mon, Sep 27, 2027, 3:55 AM EDTWaning Moon (sampled hours)Void-of-course Sat, Sep 25, 2027, 6:03 AM EDT – Sat, Sep 25, 2027, 9:00 AM EDT
Sep 26	Sun	68	Applying Moon–Saturn trine · exact Mon, Sep 27, 2027, 3:55 AM EDTWaning Moon (sampled hours)
Sep 27	Mon	50	Applying Moon–Saturn trine · exact Mon, Sep 27, 2027, 3:55 AM EDTWaning Moon (sampled hours)Void-of-course Mon, Sep 27, 2027, 3:55 AM EDT – Mon, Sep 27, 2027, 10:28 AM EDT
Sep 28	Tue	47	Waning Moon (sampled hours)Void-of-course Tue, Sep 28, 2027, 3:48 PM EDT – Wed, Sep 29, 2027, 11:30 AM EDT
Sep 29	Wed	35	Applying Moon–Saturn opposition · exact Fri, Oct 1, 2027, 6:24 AM EDTWaning Moon (sampled hours)Waxing Moon (sampled hours)Void-of-course Tue, Sep 28, 2027, 3:48 PM EDT – Wed, Sep 29, 2027, 11:30 AM EDT
Sep 30	Thu	32	Applying Moon–Saturn opposition · exact Fri, Oct 1, 2027, 6:24 AM EDTWaxing Moon (sampled hours)

How to read this

Void-of-course— after the Moon’s last exact aspect in a sign, before it enters the next. The classical read: finish things; don’t start them. Exact times are in the void calendar for September 2027. Mercury retrograde — the traditional caution for messages, deals, and signatures; station times to the second are in the retrograde dates. Waxing / waning — growing favors starts, thinning favors finishing. The applying aspect— the Moon’s next exact contact with this decision’s planet, easy angles helping, hard angles dragging. The full rulebook — which conventions Orrery follows and which it refuses — is in Method.

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Engine 0.6.1 · config v3 · JPL de440s.bsp · tzdata 2026.3. Rankings use the computed conditions and the scoring rules published in Method.