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

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
1920-01-02T00 Lu xd +53.90
1920-01-03T16 Lu +d +20.81
1920-01-04T02 Lu p 0.002403
1920-01-04T08 Lu v  +89.12
1920-01-05T09 Lu o  +104.25
1920-01-06T04 Me xa +267.76
1920-01-11T05
**
B  +139.27
1920-01-13T18 Me −d −24.02
1920-01-15T03 Lu xa +233.03
1920-01-15T18 Lu V  +240.16
1920-01-16T05 Lu a 0.002711
1920-01-17T08 Lu −d −20.77
1920-01-20T17 Lu c  +299.88
1920-01-28T01
**
S  +229.95
1920-01-28T16 Me a  1.415
1920-01-29T03 Lu xd +51.46
1920-01-30T13 Ne V  +130.16
1920-01-30T19 Ne o  +130.15
1920-01-31T02 Lu +d +20.66
1920-01-31T03 Ne p  29.07
1920-02-01T05 Lu p 0.002437
1920-02-01T17 Lu v  +102.89
1920-02-02T05 Ju p  4.332
1920-02-02T14 Ju V  +133.16
1920-02-02T18 Ju o  +133.14
1920-02-02T19 Ve −d −22.11
1920-02-03T20 Lu o  +134.25
1920-02-04T23 Me o  +315.14
1920-02-07T22
**
B  +177.00
1920-02-11T05 Lu xa +230.05
1920-02-12T16 Lu V  +247.67
1920-02-13T00 Lu a 0.002704
1920-02-13T17 Lu −d −20.55
1920-02-15T22 Me v  +334.91
1920-02-19T09 Lu c  +329.96
1920-02-20T20 Ur v  +331.65
1920-02-21T02 Ur c  +331.67
1920-02-22T01 Ur a  21.03
1920-02-22T22
**
S  +289.56
1920-02-24T19 Me xd +350.78
1920-02-25T03 Lu xd +48.41
1920-02-25T08 Ve xa +303.32
1920-02-27T09 Sa V  +158.30
1920-02-27T09 Lu +d +20.42
1920-02-27T11 Sa p  8.325
1920-02-27T15 Sa o  +158.28
1920-02-28T01 Lu p 0.002471
1920-02-29T00 Lu v  +102.72
1920-03-03T06 Me e  +18.11
1920-03-03T23
**
B  +212.54
1920-03-04T09 Lu o  +164.02
1920-03-09T07 Lu xa +227.19
1920-03-10T08 Me Rg +4.68
1920-03-11T17 Lu V  +255.76
1920-03-11T21 Lu a 0.002702
1920-03-12T01 Lu −d −20.30
1920-03-12T02 Me +d +4.87
1920-03-14T14 Ma Rg +219.10
1920-03-15T12
**
S  +260.53
1920-03-15T19 Ma −d −12.37
1920-03-19T19 Me c  +359.42
1920-03-19T22 Lu c  +196.41
1920-03-20T16 Me V  +358.64
1920-03-23T03 Ve v  +336.16
1920-03-23T04 Me p  0.6010
1920-03-23T06 Lu xd +46.26
1920-03-23T18 Lu v  +53.43
1920-03-24T00 Lu p 0.002461
1920-03-25T14 Lu +d +20.20
1920-03-27T20
**
B  +210.30
1920-03-27T22
**
s  +255.71
1920-03-30T10 Ve V  +345.07
1920-04-02T06 Ju +d +19.11
1920-04-02T10 Me Pg +351.65
1920-04-02T22 Lu o  +193.40
1920-04-03T04 Me xa +351.68
1920-04-03T12 Ju Pg +128.10
1920-04-05T13 Lu xa +225.76
1920-04-07T20 Me −d −3.75
1920-04-08T09 Lu −d −20.13
1920-04-08T16 Lu a 0.002705
1920-04-08T16 Lu V  +263.01
1920-04-09T19
**
S  +312.83
1920-04-13T03 Ve v  +1.94
1920-04-16T13 Me e  −27.42
1920-04-18T09 Lu c  +28.54
1920-04-18T21 Ne Pg +128.74
1920-04-19T13 Lu xd +45.63
1920-04-20T03 Ne +d +18.07
1920-04-20T11 Lu v  +59.06
1920-04-20T13 Lu p 0.002426
1920-04-20T20 Ma o  +210.94
1920-04-21T21 Lu +d +20.09
1920-04-22T22 Ma V  +210.16
1920-04-24T10
**
B  +176.17
1920-04-27T16 Ma p  0.5831
1920-05-02T13 Lu o  +222.32
1920-05-02T20 Lu xa +225.60
1920-05-03T06 Sa +d +11.54
1920-05-05T16 Lu −d −20.09
1920-05-06T07 Lu a 0.002711
1920-05-06T09 Lu V  +267.78
1920-05-06T11 Sa Pg +154.81
1920-05-06T18
**
S  +225.07
1920-05-07T06 Ve V  +31.54
1920-05-14T19 Ve v  +40.78
1920-05-17T00 Lu xd +45.64
1920-05-17T18 Lu c  +56.99
1920-05-18T18 Lu p 0.002399
1920-05-18T20 Lu v  +73.35
1920-05-19T06 Lu +d +20.09
1920-05-22T11
**
B  +136.60
1920-05-22T19 Me xd +58.43
1920-05-24T00 Ma +d −8.30
1920-05-24T18 Me a  1.322
1920-05-26T00 Me o  +65.45
1920-05-26T09 Me v  +66.31
1920-05-27T13 Ma xa +201.34
1920-05-28T10 Ve V  +57.46
1920-05-30T02 Lu xa +225.60
1920-05-31T10 Ma Pg +201.24
1920-06-01T05 Lu o  +250.87
1920-06-01T23 Lu −d −20.12
1920-06-02T11 Lu V  +265.60
1920-06-02T16 Lu a 0.002715
1920-06-03T02 Ne xa +129.29
1920-06-04T17
**
S  +173.13
1920-06-07T12 Ur +d −10.15
1920-06-07T22 Me +d +25.43
1920-06-09T13 Ur Rg +335.67
1920-06-13T09 Lu xd +45.15
1920-06-15T17 Lu +d +20.11
1920-06-16T01 Lu c  +85.07
1920-06-16T03 Lu p 0.002388
1920-06-16T07 Lu v  +88.66
1920-06-17T12 Ve xd +82.10
1920-06-19T12
**
B  +113.10
1920-06-26T06 Lu xa +224.63
1920-06-27T06 Ve +d +23.77
1920-06-29T01 Lu V  +257.64
1920-06-29T02 Me e  +25.68
1920-06-29T06 Lu −d −20.11
1920-06-29T19 Lu a 0.002716
1920-06-30T03 Me xa +124.14
1920-06-30T20 Lu o  +279.18
1920-07-01T23 Ve a  1.736
1920-07-02T23 Ve o  +101.12
1920-07-04T00
**
S  +157.06
1920-07-10T15 Lu xd +43.41
1920-07-13T01 Me Rg +130.30
1920-07-13T04 Lu +d +20.05
1920-07-14T12 Lu p 0.002396
1920-07-14T17 Lu v  +103.49
1920-07-15T08 Lu c  +113.00
1920-07-17T11
**
B  +106.74
1920-07-20T00
**
b  +66.56
1920-07-20T15 Me −d +13.87
1920-07-23T08 Lu xa +222.31
1920-07-23T13 Me p  0.5838
1920-07-26T00 Me V  +124.50
1920-07-26T08 Lu V  +258.36
1920-07-26T13 Lu −d −19.99
1920-07-26T19 Me c  +123.93
1920-07-27T02 Lu a 0.002712
1920-07-30T11 Lu o  +307.43
1920-08-01T08
**
S  +157.40
1920-08-03T01 Ne a  31.08
1920-08-03T11 Ne c  +131.27
1920-08-03T19 Ne v  +131.29
1920-08-06T05 Me Pg +119.24
1920-08-06T17 Lu xd +40.63
1920-08-09T14 Lu +d +19.88
1920-08-09T19
**
s  +70.29
1920-08-11T17 Lu p 0.002420
1920-08-11T23 Lu v  +116.04
1920-08-13T15 Lu c  +141.03
1920-08-14T15
**
B  +109.91
1920-08-14T16 Me e  −18.69
1920-08-15T16 Me +d +18.45
1920-08-18T08 Ve v  +158.25
1920-08-18T18 Me xd +128.12
1920-08-19T10 Lu xa +219.41
1920-08-21T01 Ju v  +148.77
1920-08-21T21 Ju c  +148.95
1920-08-22T01 Ju a  6.386
1920-08-22T21 Lu −d −19.78
1920-08-23T04 Lu V  +264.42
1920-08-23T16 Lu a 0.002706
1920-08-25T20 Ur p  19.04
1920-08-26T14 Ur V  +333.69
1920-08-26T18 Ur o  +333.69
1920-08-29T01 Lu o  +335.86
1920-08-29T22
**
S  +157.86
1920-09-01T15 Me v  +152.68
1920-09-02T18 Lu xd +38.05
1920-09-04T11 Ve V  +179.37
1920-09-05T21 Lu +d +19.66
1920-09-05T22 Ve v  +181.17
1920-09-06T19
**
b  +63.79
1920-09-07T11 Sa c  +165.02
1920-09-07T16 Sa a  10.38
1920-09-07T21 Sa v  +165.07
1920-09-08T09 Lu p 0.002454
1920-09-08T18 Lu v  +122.85
1920-09-09T00 Me o  +166.88
1920-09-12T00 Lu c  +169.44
1920-09-12T15
**
B  +110.03
1920-09-15T14 Lu xa +217.26
1920-09-15T16 Me a  1.395
1920-09-19T05 Lu −d −19.57
1920-09-20T03 Lu V  +272.20
1920-09-20T10 Lu a 0.002702
1920-09-26T02 Me xa +196.56
1920-09-27T13 Lu o  +4.64
1920-09-28T12
**
S  +164.31
1920-09-29T22 Lu xd +36.70
1920-10-03T02 Lu +d +19.49
1920-10-03T21 Lu p 0.002473
1920-10-04T11 Lu v  +100.89
1920-10-07T01 Ve xa +219.55
1920-10-11T12 Lu c  +198.40
1920-10-11T13
**
B  +120.04
1920-10-12T22 Lu xa +216.51
1920-10-16T13 Lu −d −19.45
1920-10-17T02 Ma −d −25.18
1920-10-18T05 Lu V  +280.83
1920-10-18T06 Lu a 0.002704
1920-10-24T20 Me e  +23.97
1920-10-27T02 Lu o  +33.87
1920-10-27T06 Lu xd +36.52
1920-10-27T15
**
S  +181.28
1920-10-30T02 Lu p 0.002445
1920-10-30T04 Lu v  +78.43
1920-10-30T08 Lu +d +19.44
1920-11-02T05 Me −d −23.24
1920-11-05T00 Me Rg +242.20
1920-11-08T18 Ur −d −11.58
1920-11-09T06 Lu xa +216.57
1920-11-09T11
**
B  +134.11
1920-11-10T04 Lu c  +227.98
1920-11-10T16 Ur Pg +331.75
1920-11-12T21 Lu −d −19.46
1920-11-14T11 Ne −d +16.73
1920-11-14T17 Me xd +234.97
1920-11-15T01 Me p  0.6764
1920-11-15T02 Lu a 0.002710
1920-11-15T06 Lu V  +289.53
1920-11-15T13 Me V  +233.85
1920-11-15T15 Ne Rg +133.76
1920-11-15T18 Me c  +233.60
1920-11-19T16 Ve −d −25.26
1920-11-23T16 Lu xd +36.45
1920-11-24T17
**
S  +201.27
1920-11-25T00 Me Pg +226.08
1920-11-25T13 Lu o  +63.52
1920-11-26T00 Me +d −14.27
1920-11-26T18 Lu +d +19.48
1920-11-27T02 Lu p 0.002409
1920-11-27T04 Lu v  +87.58
1920-12-03T02 Me e  −20.36
1920-12-06T11 Lu xa +216.13
1920-12-07T02
**
B  +151.28
1920-12-09T22 Lu c  +258.08
1920-12-10T04 Lu −d −19.50
1920-12-12T16 Lu a 0.002716
1920-12-13T01 Lu V  +295.35
1920-12-21T01 Lu xd +35.12
1920-12-23T01 Me xa +257.96
1920-12-24T00
**
S  +242.57
1920-12-24T06 Lu +d +19.49
1920-12-25T00 Lu o  +93.46
1920-12-25T12 Lu p 0.002386
1920-12-25T14 Lu v  +102.35
1920-12-29T00 Sa −d +4.03
1920-12-30T23 Ju −d +5.52
1920-12-31T15 Ma v  +326.76

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Last updated: 2021-07-19