Calculation research
How Many Planets Can Be Retrograde at Once? 100 Years (1951–2050)
By Natal Chart Lab ·
In our computed 100-year window, January 1, 1951 through December 31, 2050 UTC, the maximum is 7 simultaneous retrogrades among Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. That count occurs in 2 intervals, totaling 8.36 elapsed 24-hour days. All eight are never retrograde together in this dataset. This is a window-specific result, not an all-time astronomical maximum.
Check retrograde planets now or on a date and whether Mercury is retrograde. Pluto is included as an astrological convention; the Sun, Moon, nodes, Lilith and Chiron are excluded. A different body list requires a new count.
When seven bodies were retrograde together
| Starts (UTC) | Ends (UTC) | Elapsed days |
|---|---|---|
| 1984-04-29 18:38 UTC | 1984-05-05 14:10 UTC | 5.81 |
| 1986-07-12 17:07 UTC | 1986-07-15 06:11 UTC | 2.54 |
How much time each count occupies
| Bodies retrograde | Elapsed days | Share of window |
|---|---|---|
| 0 | 3497.41 | 9.58% |
| 1 | 7454.48 | 20.41% |
| 2 | 9519.38 | 26.06% |
| 3 | 8918.65 | 24.42% |
| 4 | 5103.35 | 13.97% |
| 5 | 1659.70 | 4.54% |
| 6 | 363.67 | 1.00% |
| 7 | 8.36 | 0.02% |
| 8 | 0.00 | 0.00% |
Days here mean elapsed duration divided by 24 hours. They are not counts of calendar dates touched, and they are not daily noon samples. Rounded rows may not sum exactly to the displayed total.
All planets direct in 2026
“All planets direct” below means zero retrogrades in the eight-body list. It does not exclude pre-shadow or post-shadow periods. The table is clipped to this UTC year.
| Starts (UTC) | Ends (UTC) |
|---|---|
| 2026-03-20 19:35 UTC | 2026-05-06 15:45 UTC |
Years with the most all-direct time
| Year | All-direct elapsed days | Highest simultaneous count |
|---|---|---|
| 1984 | 117.37 | 7 |
| 1981 | 116.08 | 5 |
| 1985 | 105.84 | 6 |
| 1980 | 101.64 | 6 |
| 1983 | 98.98 | 6 |
| 1979 | 98.23 | 6 |
| 1982 | 95.26 | 6 |
| 1955 | 90.87 | 5 |
| 2023 | 88.39 | 6 |
| 2022 | 84.60 | 6 |
Method and dataset limits
Each retrograde is the half-open interval [retrograde station, direct station). Sweep all station endpoints, changing the active count at each timestamp and merging adjacent equal counts. This retains brief intervals missed by daily sampling. Aggregate durations by count and split overlaps at UTC year boundaries. Simultaneous start/end timestamps are combined before measuring the next interval.
The source includes retrogrades beginning in 1950–2050. A period beginning in 1949 can be missing, so this analysis begins in 1951. Its exclusive end is January 1, 2051. Do not relabel it “1950–2050”: that would cover 101 calendar years and introduce an incomplete initial boundary. Source table generated 2026-10-25; station times come from Astronomy Engine and numerical speed searches, not an independent validation of every station. Minute-level reporting is not a proven one-minute error bound.
Download the research JSON · Reproduce these tables (TypeScript source). Research output is CC BY 4.0; attribute Natal Chart Lab and link to this article.
Download the underlying station CSV · Station JSON · Related research: Mercury and Venus turning direct together in 2026. The statistics describe apparent motion and establish no effects on people.
Prepared with AI assistance and checked against calculation code and saved data. Tables state their definitions and limits; astrological interpretations are not established by these calculations.