Henge Days

Henge pages · London

Tate Modern: henge days

37 henge days a year on 4 walls. Next: sunrise square to the ESE wall, Nov 13, 2026 to Nov 18, 2026, best Wed, Nov 18, 2026 at 07:26.

Long brick river facade facing north across the Thames: head-on sun only around midsummer sunrise and sunset.

Open it in Henge Days

Computed on Oct 13, 2026 for the 12 months to Oct 13, 2027, from the OpenStreetMap outline (way/24642569). Times are local to London (Europe/London).

ESE wall faces 121°, 46 m

Days of head-on light under 15°: 12 henge, 26 golden, 43 low sun.

LightWhenDatesDaysBest dayTimeSun
Low sunSunriseOct 13, 2026 to Nov 18, 202637Wed, Nov 18, 202607:260.1°
GoldenSunriseOct 31, 2026 to Nov 18, 202619Wed, Nov 18, 202607:260.1°
HengeSunriseNov 13, 2026 to Nov 18, 20266Wed, Nov 18, 202607:260.1°
HengeSunriseJan 24, 2027 to Jan 29, 20276Sun, Jan 24, 202707:530.1°
GoldenSunriseJan 24, 2027 to Feb 11, 202719Sun, Jan 24, 202707:530.1°
Low sunSunriseJan 24, 2027 to Mar 4, 202740Sun, Jan 24, 202707:530.1°
Low sunSunriseOct 10, 2027 to Oct 13, 20274Wed, Oct 13, 202708:5813.4°

WNW wall faces 285°, 41 m

Days of head-on light under 15°: 9 henge, 22 golden, 55 low sun.

LightWhenDatesDaysBest dayTimeSun
HengeSunsetApr 12, 2027 to Apr 15, 20274Mon, Apr 12, 202719:480.2°
GoldenSunsetApr 12, 2027 to Apr 26, 202715Mon, Apr 12, 202719:480.2°
Low sunSunsetApr 12, 2027 to May 23, 202742Mon, Apr 12, 202719:480.2°
Low sunSunsetJul 19, 2027 to Aug 31, 202744Tue, Aug 31, 202719:480°
GoldenSunsetAug 16, 2027 to Aug 31, 202716Tue, Aug 31, 202719:480°
HengeSunsetAug 27, 2027 to Aug 31, 20275Tue, Aug 31, 202719:480°

W wall faces 274°, 65 m

Days of head-on light under 15°: 8 henge, 19 golden, 42 low sun.

LightWhenDatesDaysBest dayTimeSun
HengeSunsetMar 26, 2027 to Mar 29, 20274Fri, Mar 26, 202718:200.2°
GoldenSunsetMar 26, 2027 to Apr 7, 202713Fri, Mar 26, 202718:200.2°
Low sunSunsetMar 26, 2027 to Apr 28, 202734Fri, Mar 26, 202718:200.2°
Low sunSunsetAug 14, 2027 to Sep 17, 202735Fri, Sep 17, 202719:090°
GoldenSunsetSep 4, 2027 to Sep 17, 202714Fri, Sep 17, 202719:090°
HengeSunsetSep 14, 2027 to Sep 17, 20274Fri, Sep 17, 202719:090°

E wall faces 95°, 83 m

Days of head-on light under 15°: 8 henge, 18 golden, 38 low sun.

LightWhenDatesDaysBest dayTimeSun
HengeSunriseMar 12, 2027 to Mar 15, 20274Fri, Mar 12, 202706:240.2°
GoldenSunriseMar 12, 2027 to Mar 24, 202713Fri, Mar 12, 202706:240.2°
Low sunSunriseMar 12, 2027 to Apr 12, 202732Fri, Mar 12, 202706:240.2°
Low sunSunriseSep 1, 2027 to Oct 2, 202732Sat, Oct 2, 202707:040.1°
GoldenSunriseSep 20, 2027 to Oct 2, 202713Sat, Oct 2, 202707:040.1°
HengeSunriseSep 29, 2027 to Oct 2, 20274Sat, Oct 2, 202707:040.1°

N wall faces 5°, 164 m

The sun never strikes this wall head-on under 15°; it gets only high sun.

S wall faces 185°, 115 m

Days of head-on light under 15°: 8 low sun.

LightWhenDatesDaysBest dayTimeSun
Low sunSunsetDec 18, 2026 to Dec 25, 20268Fri, Dec 18, 202612:1615°

SSW wall faces 213°, 40 m

Days of head-on light under 15°: 79 low sun.

LightWhenDatesDaysBest dayTimeSun
Low sunSunsetNov 12, 2026 to Jan 29, 202779Sun, Dec 20, 202614:208.9°

About these dates

A henge day has the sun on the horizon, under 1.5° up, square to the wall. Golden is under 6°, low sun under 15°. A window of several days has a best day, when the sun is lowest, and that day's time. Every date and time here is computed from the building outline in OpenStreetMap and the position of the sun, never checked on the ground. An outline a degree off moves the head-on minute by about four minutes. Hills, trees and other buildings can block a low sun. Treat each date as a plan to confirm before you travel. See Terms and accuracy.