$$\def\|{&}\DeclareMathOperator{\D}{\bigtriangleup\!} \DeclareMathOperator{\d}{\text{d}\!}$$

The diagram below is explained further on the page for the year 2000.

For an explanation of the above pictures, see the page for the year 2000.

The last table on this page lists a number of noteworthy planetary phenomena during the listed year. The first column ("date") gives the date and hour, in the form year-month-dayThour in the Gregorian calendar, in Universal Time (UT). The second column ("pl") identifies the planet that shows the phenomenon:

pl Planet
Me Mercury
Ve Venus
Ma Mars
Ju Jupiter
Sa Saturn
Ur Uranus
Ne Neptune
Lu Moon

The third column ("*") provides the type of the phenomenon. The fourth column ("AU") shows the value (distance) in Astronomical Units, if applicable. The fifth column ("deg") gives the value of a relevant angle (declination $$δ$$, elongation $$E$$, conjunction spread $$σ$$, or ecliptic longitude $$λ$$) in degrees. Which angle it is for each phenomenon is shown below in column "?". Declinations and ecliptical longitudes are measured relative to the equinox of the date.

 ?
Explanation
p perigee
a apogee
+dδgreatest northern declination
−dδgreatest southern declination
cλconjunction (with the Sun)
oλopposition (relative to the Sun)
eEgreatest elongation
xaλpassage through the ascending node (zero ecliptical latitude)
xdλpassage through the descending node (zero ecliptical latitude)
bσleast conjunction spread (Mercury - Saturn)
Bσleast conjunction spread (Mercury - Neptune)
sσgreatest conjunction spread (Mercury - Saturn)
Sσgreatest conjunction spread (Mercury - Neptune)
Vλbegin eastward (prograde) acceleration
Pgλstationary point: begin eastward (prograde) motion
vλbegin westward (retrograde) acceleration
Rgλstationary point: begin westward (retrograde) motion

The calculations for the planets are based on the VSOP87 model (type A) of Laskar, and the calculations for the Moon are based on the most detailed model from [Meeus]. One position per day was calculated for each celestial object. The hour of the day for each phenomenon was determined by interpolation.

date pl *  AU deg
1971-01-03T16 Me +d −20.22
1971-01-06T22
**
S  +144.84
1971-01-07T16 Me Pg +267.81
1971-01-08T09 Sa −d +14.33
1971-01-08T23 Lu +d +27.80
1971-01-11T01 Lu o  +110.67
1971-01-13T18 Lu xd +143.77
1971-01-15T23 Lu a 0.002709
1971-01-16T01 Lu V  +171.09
1971-01-16T06 Ur −d −4.71
1971-01-16T23 Sa Pg +45.69
1971-01-17T16 Ur Rg +193.56
1971-01-18T20 Me e  −24.06
1971-01-20T11 Ve e  −46.85
1971-01-21T20
**
B  +99.44
1971-01-23T11 Lu −d −27.85
1971-01-26T10 Lu c  +306.34
1971-01-27T07 Me −d −22.61
1971-01-27T14 Lu xa +323.63
1971-01-27T15 Me xa +284.94
1971-01-27T20 Lu v  +327.28
1971-01-27T22 Lu p 0.002410
1971-01-31T18
**
b  +115.18
1971-02-04T20
**
S  +153.05
1971-02-05T05 Lu +d +27.86
1971-02-09T19 Lu o  +140.92
1971-02-10T01 Lu xd +143.61
1971-02-12T07 Ve −d −20.81
1971-02-12T12 Lu a 0.002714
1971-02-12T15 Lu V  +174.22
1971-02-19T05
**
B  +113.59
1971-02-19T21 Lu −d −27.86
1971-02-24T01 Lu xa +323.65
1971-02-24T21 Lu c  +336.14
1971-02-24T22 Ne −d −19.13
1971-02-25T09 Lu p 0.002388
1971-02-25T11 Lu v  +344.68
1971-02-27T03 Me a  1.382
1971-03-04T10 Lu +d +27.85
1971-03-05T01 Ne Rg +243.07
1971-03-05T22
**
S  +177.47
1971-03-05T23 Me o  +345.02
1971-03-09T07 Lu xd +143.59
1971-03-09T09 Ma xa +268.46
1971-03-11T04 Lu V  +165.98
1971-03-11T14 Lu o  +170.87
1971-03-11T15 Lu a 0.002716
1971-03-13T09 Me v  +359.40
1971-03-18T07 Me xd +8.99
1971-03-19T05 Lu −d −27.77
1971-03-19T09 Ve xa +318.50
1971-03-19T11
**
B  +140.62
1971-03-19T15 Ma −d −23.56
1971-03-20T01 Ju −d −20.42
1971-03-22T22 Ju Rg +246.45
1971-03-23T11 Lu xa +323.07
1971-03-25T21 Lu p 0.002388
1971-03-26T01 Lu v  +1.94
1971-03-26T07 Lu c  +74.39
1971-03-31T12 Me e  +18.81
1971-03-31T18 Lu +d +27.70
1971-04-01T04 Ur V  +191.54
1971-04-01T09 Ur o  +191.53
1971-04-02T03 Ur p  17.34
1971-04-03T05
**
S  +221.26
1971-04-05T10 Lu xd +142.44
1971-04-06T06
**
s  +137.56
1971-04-07T02 Lu V  +162.14
1971-04-07T19 Lu a 0.002715
1971-04-08T21 Me +d +15.76
1971-04-09T05 Me Rg +33.76
1971-04-10T08 Lu o  +200.30
1971-04-15T11 Lu −d −27.57
1971-04-17T22
**
B  +160.93
1971-04-19T11 Me c  +29.25
1971-04-19T17 Lu xa +321.11
1971-04-20T05 Me V  +28.71
1971-04-22T14 Me p  0.5686
1971-04-23T05 Lu p 0.002408
1971-04-23T12 Lu v  +17.19
1971-04-24T16 Lu c  +34.32
1971-04-25T14 Me xa +25.22
1971-04-28T02 Lu +d +27.47
1971-04-29T10
**
b  +132.00
1971-05-01T16
**
S  +244.37
1971-05-02T12 Lu xd +139.92
1971-05-02T22 Me Pg +23.15
1971-05-04T19 Lu V  +166.94
1971-05-05T09 Lu a 0.002709
1971-05-07T13 Me −d +6.84
1971-05-09T23 Lu o  +229.15
1971-05-12T16 Lu −d −27.38
1971-05-15T07
**
B  +178.20
1971-05-16T18 Lu xa +318.23
1971-05-16T23 Sa c  +55.94
1971-05-17T03 Sa a  10.12
1971-05-17T04 Me e  −25.60
1971-05-17T12 Sa v  +56.00
1971-05-21T04 Lu p 0.002440
1971-05-21T14 Lu v  +27.64
1971-05-22T20 Ju o  +241.59
1971-05-22T23 Ne o  +241.70
1971-05-23T02 Ne V  +241.70
1971-05-23T05 Ju V  +241.54
1971-05-23T15 Ne p  29.31
1971-05-24T00 Lu c  +62.70
1971-05-24T09 Ju p  4.352
1971-05-25T12 Lu +d +27.34
1971-05-29T15 Lu xd +137.03
1971-05-30T06
**
S  +295.35
1971-06-01T17 Lu V  +173.98
1971-06-02T02 Lu a 0.002703
1971-06-08T12 Lu o  +257.54
1971-06-08T22 Lu −d −27.30
1971-06-09T21
**
B  +232.51
1971-06-12T19 Lu xa +315.80
1971-06-14T06 Me xd +74.98
1971-06-15T03 Ur +d −3.10
1971-06-15T20
**
S  +239.65
1971-06-16T21 Lu p 0.002469
1971-06-17T00 Ur Pg +189.43
1971-06-17T15 Lu v  +24.25
1971-06-20T02 Me v  +87.68
1971-06-21T00 Me o  +89.61
1971-06-21T16 Me a  1.325
1971-06-21T20 Lu +d +27.32
1971-06-22T09 Lu c  +90.82
1971-06-23T11 Ma +d −18.82
1971-06-24T00 Me +d +24.76
1971-06-25T19 Lu xd +135.09
1971-06-29T16 Lu V  +181.42
1971-06-29T20 Lu a 0.002702
1971-06-30T15
**
B  +192.41
1971-07-06T05 Lu −d −27.35
1971-07-07T22 Lu o  +285.64
1971-07-10T00 Lu xa +314.66
1971-07-10T01 Ve +d +23.35
1971-07-10T12 Ve xd +95.02
1971-07-10T18 Ma Rg +321.95
1971-07-12T03 Lu p 0.002459
1971-07-12T05 Lu v  +346.24
1971-07-12T12
**
S  +261.65
1971-07-18T18 Ju +d −18.61
1971-07-19T03 Lu +d +27.36
1971-07-21T21 Lu c  +118.93
1971-07-22T13 Me xa +145.74
1971-07-23T02 Lu xd +134.50
1971-07-24T06 Ju Pg +236.59
1971-07-27T14 Lu V  +188.67
1971-07-27T14 Lu a 0.002706
1971-07-28T03
**
s  +202.19
1971-07-28T16
**
B  +155.74
1971-07-29T06 Me e  +27.16
1971-08-02T14 Lu −d −27.39
1971-08-03T10 Ne +d −18.58
1971-08-06T07 Lu o  +313.68
1971-08-06T09 Lu xa +314.52
1971-08-08T13 Lu p 0.002426
1971-08-08T14 Lu v  +347.40
1971-08-09T18 Ma o  +317.00
1971-08-10T03
**
S  +206.72
1971-08-10T13 Ma V  +316.80
1971-08-11T14 Ma p  0.3757
1971-08-11T23 Ne Pg +240.30
1971-08-12T07 Me Rg +160.55
1971-08-15T08 Lu +d +27.39
1971-08-15T11 Me −d +3.73
1971-08-19T10 Lu xd +134.57
1971-08-20T10 Lu c  +147.26
1971-08-23T00 Me p  0.6166
1971-08-23T20 Ve a  1.729
1971-08-24T07 Lu a 0.002713
1971-08-24T10 Lu V  +194.72
1971-08-24T19
**
B  +139.79
1971-08-25T07 Me V  +153.46
1971-08-26T02 Me c  +152.72
1971-08-26T23 Ve o  +153.50
1971-08-27T19 Ma −d −23.11
1971-08-30T00 Lu −d −27.36
1971-09-02T19 Lu xa +314.43
1971-09-04T16 Lu o  +341.95
1971-09-04T17 Me Pg +147.36
1971-09-05T16 Lu p 0.002398
1971-09-05T20 Lu v  +359.54
1971-09-07T01
**
S  +193.60
1971-09-09T01 Ma Pg +311.89
1971-09-09T17 Me +d +11.64
1971-09-09T17 Sa +d +19.37
1971-09-10T05 Me xd +149.57
1971-09-11T14 Lu +d +27.31
1971-09-11T16 Me e  −17.92
1971-09-15T15 Lu xd +134.13
1971-09-18T13 Sa Rg +66.53
1971-09-19T02 Lu c  +176.00
1971-09-20T16 Lu V  +194.69
1971-09-20T17 Lu a 0.002718
1971-09-22T21
**
B  +128.24
1971-09-26T07 Lu −d −27.20
1971-09-27T21 Me v  +176.36
1971-09-30T03 Lu xa +313.16
1971-10-04T00 Lu o  +10.62
1971-10-04T02 Lu p 0.002384
1971-10-04T06 Lu v  +14.27
1971-10-05T20
**
S  +172.59
1971-10-06T14 Ur a  19.35
1971-10-07T09 Ur c  +193.96
1971-10-07T20 Ur v  +193.99
1971-10-07T23 Me o  +194.47
1971-10-08T21 Lu +d +27.11
1971-10-12T17 Lu xd +132.29
1971-10-15T13 Me a  1.426
1971-10-17T01 Lu V  +184.20
1971-10-17T20 Lu a 0.002718
1971-10-18T13 Me xa +212.12
1971-10-18T19 Lu c  +205.29
1971-10-20T23 Ve v  +221.88
1971-10-21T09
**
B  +117.66
1971-10-23T13 Lu −d −26.97
1971-10-27T07 Lu xa +310.51
1971-10-30T01 Ve xa +233.23
1971-11-01T14 Lu p 0.002392
1971-11-01T17 Lu v  +29.53
1971-11-02T09 Lu o  +39.78
1971-11-04T03
**
S  +167.69
1971-11-05T06 Lu +d +26.88
1971-11-08T18 Lu xd +129.26
1971-11-13T08 Lu V  +184.85
1971-11-14T03 Lu a 0.002714
1971-11-17T13 Lu c  +235.06
1971-11-19T05
**
B  +119.30
1971-11-19T18 Lu −d −26.80
1971-11-23T07 Lu xa +307.49
1971-11-23T08 Me e  +21.88
1971-11-23T16 Me −d −25.73
1971-11-24T13 Ne a  31.31
1971-11-24T22 Ne v  +242.79
1971-11-25T04 Sa V  +63.04
1971-11-25T05 Ne c  +242.80
1971-11-25T07 Sa p  8.088
1971-11-25T10 Sa o  +63.02
1971-11-29T22 Lu p 0.002419
1971-11-30T00 Lu v  +42.92
1971-12-01T07 Ve −d −24.68
1971-12-01T19 Lu o  +69.47
1971-12-02T14 Me Rg +268.26
1971-12-02T16 Lu +d +26.78
1971-12-03T05
**
S  +174.16
1971-12-04T22
**
b  +129.09
1971-12-05T22 Lu xd +126.52
1971-12-07T04 Me xd +266.33
1971-12-07T15 Ju a  6.290
1971-12-09T16 Ju c  +257.44
1971-12-11T07 Lu V  +192.64
1971-12-11T14 Ju v  +257.88
1971-12-11T19 Lu a 0.002708
1971-12-12T08 Me c  +260.18
1971-12-12T09 Me V  +260.16
1971-12-12T09 Me p  0.6778
1971-12-17T00 Lu −d −26.76
1971-12-17T02
**
B  +128.15
1971-12-17T07 Lu c  +265.19
1971-12-20T09 Lu xa +305.58
1971-12-21T12 Me +d −19.30
1971-12-22T08 Me Pg +251.96
1971-12-23T04
**
s  +135.76
1971-12-27T16 Lu p 0.002457
1971-12-27T19 Lu v  +49.35
1971-12-30T01 Lu +d +26.78
1971-12-31T08 Lu o  +99.52
1971-12-31T10
**
S  +189.61

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Last updated: 2021-07-19