Eclipses 2021

In 2021, there will be four eclipses: two solar eclipses and two lunar eclipses

DateTypeVisibility
26 May 2021Total lunar eclipseNot visible in Belgium
10 June 2021Annular solar eclipseVisible in Belgium as a partial eclipse
19 November 2021Partial lunar eclipsePartially visible in Belgium
4 December 2021Total solar eclipseNot visible in Belgium

I – 26 May 2021 – Total lunar eclipse, not visible in Belgium

PhaseUniversal TimeLongitudeLatitudePosition angle Altitude at Uccle/Ukkel
Penumbral eclipse begins08h46.2133 41 W20 18 S124 E
Partial lunar eclipse begins09h44.6147 42 W20 28 S133 E
Total lunar eclipse begins11h09.4168 03 W20 43 S185 E
Maximum de l’éclipse11h18.7170 16 W20 44 S196 E
Total lunar eclipse ends11h27.9172 29 W20 46 S206 E
Partial lunar eclipse ends12h52.8167 11 E21 00 S258 E
Penumbral eclipse ends13h51.2153 10 E21 10 S268 E

The longitude and the latitude refer to the point on Earth where the Moon is at that time at its zenith. The position angle is defined from the imaginary line that connects the center of the lunar disc to the center of the Earth’s shadow. It is measured at the center of the lunar disc, from the North, in an anti-clockwise direction. At the beginning and at the end of the penumbra and shadow phases, it is the position angle of the contact point. The altitude and times of the Moon’s rise and fall are calculated for its center, without taking refraction into account.

Magnitude of the eclipse: 1.015, the diameter of the solar disk being taken as the unit.

The map below shows the region where the eclipse is observable. The explanation of the codes used can be found at the bottom of the page.

II – 10 June 2021 – Annular solar eclipse, visible in Belgium as a partial solar eclipse

PhaseUniversal TimeLongitudeLatitude
Eclipse begins08h12.3044 10 W23 29 N
Annular eclipse begins09h49.8086 29 W48 13 N
Central eclipse begins09h54.9089 30 W50 10 N
Maximum of the eclipse10h42.8066 57 W81 16 N
Central eclipse at the local solar noon11h01.1165 23 W88 09 N
Central eclipse ends11h28.7156 32 E63 34 N
Annular eclipse ends11h33.8151 19 E62 13 N
Eclipse ends13h11.4094 22 E41 16 N

Magnitude of the eclipse: 0.944, the diameter of the solar disk being taken as the unit.

The map below shows the region where the eclipse is observable. The explanation of the codes used can be found at the bottom of the page.

The duration of the annular phase along the centrality line will reach a maximum of 3m 48s at a point located at 67° of longitude west and 81° of latitude north.

Phases in Uccle/Ukkel – Brussels (Observatory)

Phase Universal Time Position angle relative to the pole
Position angle relative to the zenith Altitude at Uccle/Ukkel
First contact 09h17min01s 298 334 +51
Maximum of the eclipse 10h19min06s 342 007 +58
Last contact 11h25min09s 026 032 +62

Magnitude of the eclipse: 0.263, the diameter of the solar disk being taken as the unit.

The position angle relative to the pole, resp. the zenith, is the angle formed by the direction of the centre of the lunar disc with the direction of the pole, resp. the zenith. Both angles are measured at the centre of the solar disc in an anti-clockwise direction. At the beginning and at the end of the eclipse, they correspond to the position angles of the contact points.

The altitude of the Sun is that of a reference point, which is located during the eclipse in the eclipsed part of the Sun, and which coincides with the times of contact with the point of contact of the Sun and Moon. Refraction is not taken into account.

Visibility in Belgium

The table below gives the phases for some representative Belgian sites.

In Brussels and Wallonia:

LocationBegin in universal time Maximum in universal time End in universal time Magnitude
Brussels09h17min01s10h19min11s11h25min20s0.265
Nivelles/Nijvel09h16min56s10h18min40s11h24min22s0.259
Jodoigne/Geldenaken09h18min05s10h19min51s11h25min28s0.258
Tournai/Doornik09h15min01s10h17min05s11h23min18s0.267
Mons/Bergen09h16min09s10h17min45s11h23min49s0.259
Charleroi09h17min12s10h18min32s11h23min49s0.254
Chimay09h16min56s10h17min37s11h22min16s0.247
Philippeville09h17min25s10h18min19s11h23min06s0.248
Namur/Namen09h18min04s10h19min20s11h24min27s0.252
Dinant09h18min12s10h19min05s11h24min47s0.247
Gedinne09h18min18s10h18min36s11h22min42s0.240
Huy/Hoei09h18min53s10h20min08s11h25min09s0.250
Liège/Luik09h19min36s10h20min57s11h26min01s0.250
Werbomont09h19min53s10h20min41s11h25min09s0.243
Eupen09h20min36s10h21min46s11h26min32s0.246
Saint Vith/Sankt Vith09h20min54s10h21min19s11h25min18s0.237
Marche-en-Famenne09h19min10s10h19min47s11h24min10s0.243
Bastogne/Bastenaken09h20min03s10h20min04s11h23min430.234
Libramont09h19min08s10h19min16s11h22min58s0.235
Bouillon09h18min38s10h18min29s11h22min07s0.235
Virton09h19min45s10h18min54s11h21min44s0.226
Arlon/Aarlen09h20min21s10h19min38s11h22min31s0.226

In Flanders:

Location Begin in universal time Maximum in universal time End in universal time Magnitude
Veurne 09h13min40s 10h16min46s 11h24min10s 0.283
Ostende/Oostende 09h14min10s 10h17min27s 11h24min58s 0.285
Bruges/Brugge 09h14min48s 10h17min57s 11h25min18s 0.282
Poperinge 09h13min44s 10h16min27s 11h23min27s 0.278
Courtrai/Kortrijk 09h14min48s 10h17min18s 11h23min59s 0.273
Gand/Gent 09h15min45s 10h18min30s 11h25min20s 0.274
Audenarde/Oudenaarde 09h15min29s 10h17min54s 11h24min26s 0.271
Grammont/Geraardsbergen 09h16min03s 10h18min15s 11h24min31s 0.267
Alost/Aalst 09h16min22s 10h18min49s 11h25min18s 0.269
Saint-Nicolas/Sint-Niklaas 09h16min36s 10h19min25s 11h26min14s 0.273
Malines/Mechelen 09h17min17s 10h19min45s 11h26min09s 0.268
Anvers/Antwerpen 09h17min08s 10h19min58s 11h26min45s 0.273
Essen 09h17min18s 10h20min31s 11h27min41s 0.278
Turnhout 09h18min16s 10h21min06s 11h27min46s 0.271
Geel 09h18min21s 10h20min52s 11h27min15s 0.267
Neerpelt 09h19min16s 10h21min46s 11h28min01s 0.265
Hasselt 09h19min04s 10h21min04s 11h26min49s 0.259
Tongres/Tongeren 09h19min21s 10h21min01s 11h26min25s 0.254
Maaseik 9h20min02s 10h22min10s 11h27min59s 0.259
Louvain/Leuven 09h17min44s 10h19min51s 11h25min52s 0.263
Diest 09h18min28s 10h20min40s 11h26min40s 0.262

III – 19 November 2021 – Partial lunar eclipse, partially visible in Belgium

Phase Universal Time Longitude Latitude Position angle Altitude at Uccle/Ukkel
Penumbral eclipse begins 06h00.4 094 59 W 18 40 N 054 E +08
Moonset at Uccle/Ukkel 06h56.9 108 42 W 18 49 N 048 E 0
Partial eclipse begins 07h18.4 113 54 W 18 53 N 044 E
Maximum of the eclipse 09h02.9 139 14 W 19 09 N 341 E
Partial eclipse ends 10h47.4 164 34 W 19 26 N 278 E
Penumbral eclipse ends 12h05.5 176 31 E 19 38 N 268 E

The longitude and the latitude refer to the point on Earth where the Moon is at that time at its zenith. The position angle is defined from the imaginary line that connects the center of the lunar disc to the center of the Earth’s shadow. It is measured at the center of the lunar disc, from the North, in an anti-clockwise direction. At the beginning and at the end of the penumbra and shadow phases, it is the position angle of the contact point. The altitude and times of the Moon’s rise and fall are calculated for its center, without taking refraction into account.

Magnitude of the eclipse: 0.978, the diameter of the solar disk being taken as the unit. The map below shows the region where the eclipse is observable.

The explanation of the codes used can be found at the bottom of the page.

IV – 4 December 2021 – Total solar eclipse, invisible in Belgium

Phase Universal Time Longitude Latitude
Eclipse begins 05h29.3 005 11 W 23 10 S
Total eclipse begins 07h00.3 048 37 W 52 05 S
Central eclipse begins 07h02.9 051 13 W 53 05 S
Maximum of the eclipse 07h33.3 046 03 W 76 41 S
Central eclipse at the local solar noon 07h56.2 121 29 W 78 58 S
Central eclipse ends 08h03.8 134 09 W 67 22 S
Total eclipse ends 08h06.6 138 49 W 67 20 S
Eclipse ends 09h37.5 148 57 E 46 12 S

The map below shows the region where the eclipse is observable. The explanation of the codes used can be found at the bottom of the page.

The duration of the totality phase along the centrality line will reach a maximum of 1m 57s at a point located at 46° of longitude west and 77° of latitude south.

Explanations:

The codes used on the maps to indicate the moon eclipse visibility are: entry into the darkness is visible in regions 1 to 6, entry into the darkness in regions 2 to 7, the beginning of the totality in regions 3 to 8. The exits of the totality, the shadow and the penumbra are respectively observable in regions 4 to 9, 5 to 10, and 6 to 11. In region 6, the entire eclipse can be observed, in regions 5 to 7 the umbral phases are observable; in regions 4 to 8 the totality is fully visible.

On solar eclipse visibility maps, the following codes are used:

“P”: Partial eclipse of the Sun, visible.
“p”: Partial eclipse of the Sun, partly visible.
“R”: Annular eclipse, whose annular phase is fully observable.
“r”: Annular eclipse, whose annular phase is partially observable.
“T”: Total eclipse, whose totality phase is fully observable.
“t”: Total eclipse, whose totality phase is partially observable.

The basic data used to write the eclipse chapter were borrowed from the DE405 digital integration, kindly provided by the Jet Propulsion Laboratory. To move from Terrestrial Time (TT) to Universal Time (UT), the following provisional relationship was used:

UT = TT – 70.0 s