Classic · Moon
Delicate Arch 2027: full moon through the arch, dates and times
Arches, Utah, rim of the bowl
Next date UTC−6
What happens
The axis runs at 137° from north: the rising moon falls into it while its height is between 2.5° and 7.5°. Outside that band the alignment does not close.
Next dates
Local times at the site (America/Denver).
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23:06 UTC−6
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00:09 UTC−6
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22:54 UTC−6
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00:25 UTC−6
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20:47 UTC−6
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19:36 UTC−6
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19:01 UTC−6
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23:44 UTC−6
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23:32 UTC−6
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00:23 UTC−6
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21:18 UTC−6
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20:05 UTC−6
5 more dates until 2030 in the app.
The moon only swings far enough near a major lunar standstill, which comes round every 18.6 years: the last was in 2025, the next is around 2043. Until then the geometry does not close, and printing a date would mean inventing one.
Where to stand
Viewpoint: Bowl rim · Arches, Utah, rim of the bowl
38.74414, -109.50018
Lined up with Delicate Arch, 0.1 km away. Look towards 137° from north. It works across an area around this point, not only from the exact spot.
Good to know
The rim of the bowl at the end of the trail, west of the arch: a few steps left or right change the alignment. After 2029 it waits for the next major lunar standstill (~2043).
Here you choose your position on the rim of the bowl: these dates say when the alignment is possible, then on site you find it by moving a few metres.
Dates for 2026–2030, worked out by Duskbox’s own astronomy engine: the sun from NREL’s SPA, the moon topocentric, both with atmospheric refraction.
