2007

Mercury was retrograde three times in 2007, for 70 days in all: in Pisces → Aquarius in late winter, in Cancer in early summer and in Scorpio → Libra in early autumn.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC−1°/D0°/D+1°/D+2°/DI · PISCES →AQUARIUS · 23 DII · CANCER26 DIII · SCORPIO →LIBRA · 21 D2007DAILY MOTION
Drag round the ring to read a day
Days retrograde70
Retrogrades3
Share of year19.2%
Last station1 Nov
Polar motion chart · 20072007 · 3 retrogrades · 70 d backward
Retrograde · inside zeroZero circleDaily motion

The year wound into a circle, January at the top. Distance from the centre is Mercury’s daily motion; wherever the trace dips inside the zero circle, Mercury is moving backward: three dips, three retrogrades. Each shaded block runs from the station-retrograde day to the station-direct day, both counted, in UTC; the trace is sampled at noon, so it can cross zero a day inside or outside the block.

Three retrogrades

Pisces → Aquarius, Cancer, Scorpio → Libra.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
Station RStation DSignShadow inShadow outDays
14 Feb 20078 Mar 2007Pisces → Aquarius30 Jan 200728 Mar 200723
15 Jun 200710 Jul 2007Cancer31 May 200724 Jul 200726
12 Oct 20071 Nov 2007Scorpio → Libra21 Sep 200717 Nov 200721
Total70

Every planet in 2007

Eleven retrogrades touched 2007 across the eight planets.

Monday, 1 January1 retrograde · ♄︎ Saturn in Leo
JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC14 FEB → 8 MAR · PISCES → AQUARIUS · 23 D15 JUN → 10 JUL · CANCER · 26 D12 OCT → 1 NOV · SCORPIO → LIBRA · 21 D27 JUL → 8 SEP · VIRGO → LEO · 44 D15 NOV → 30 JAN ’08 · CANCER → GEMINI · 77 D6 APR → 7 AUG · SAGITTARIUS · 124 D6 DEC ’06 → 19 APR · LEO · 135 D19 DEC → 3 MAY ’08 · VIRGO · 137 D23 JUN → 24 NOV · PISCES · 155 DSHADOW · RETROGRADE ENDED 20 NOV ’06 · 155 D25 MAY → 31 OCT · AQUARIUS · 160 DSHADOW · RETROGRADE ENDED 29 OCT ’06 · 161 D31 MAR → 7 SEP · SAGITTARIUS · 161 DSHADOW · RETROGRADE FROM 2 APR ’08 · 161 D
RetrogradeShadowPointer

One row per planet. The solid band runs from the day of the station retrograde to the day of the station direct, both counted; the hatched band is the shadow on either side, from the day the planet first reaches the degree it will retreat to until the day it passes the degree where it turned. Days are UTC calendar days; a planet’s sign in the readout is its apparent geocentric longitude at noon UTC. Point at the figure, or focus it and use the arrow keys, to read any day.

Computed from the ephemeris and checked against NASA JPL Horizons; times UTC. Every planet’s 2007 windows as data: JSON · CSV · how the dates are computed

Questions

01When was Mercury retrograde in 2007?
Mercury was retrograde February 14 – March 8 in Pisces → Aquarius; June 15 – July 10 in Cancer; October 12 – November 1 in Scorpio → Libra (station retrograde to station direct). Each window is bracketed by a pre- and post-shadow period — the full dates are in the table above.
02How many retrogrades happened in 2007?
11 retrograde windows touched 2007 across the eight planets: Mercury 3×, Venus 1×, Mars 1×, Jupiter 1×, Saturn 2×, Uranus 1×, Neptune 1×, Pluto 1×. Because the outer planets are each retrograde for four to five months at a time, some part of the sky was retrograde for most of the year.
03What is a retrograde shadow period?
The shadow (or “retroshade”) is the stretch of sky a planet covers three times: once moving forward, once apparently backward, once forward again. The pre-shadow begins when the planet first crosses the degree it will later retrograde back to; the post-shadow ends when it finally re-passes the degree where it first stationed. The ledger above lists both dates for each Mercury window, and the station chart draws the shadow of every planet’s.

Station alerts

A heads-up before every turn.

An email 3 days before the shadow and each station, one when it turns retrograde, and an all‑clear when it goes direct. Plus a note on each Mercury cazimi.

Next alert21 OctMercury stations retrograde on 24 Oct at 20° Scorpio
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