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brickdims.com · Geometry
Sun Path CalculatorBETA
Solar altitude, azimuth, sunrise/sunset and seasonal sun paths for locations worldwide. Relevant to AD Part L, Part O and BRE BR209 daylight assessments.
Results from brickdims.com tools are indicative only. Using this site does not create a professional relationship or duty of care. Not a substitute for professional advice or formal compliance sign-off.
London, UK: 51.51°N · 0.12°W
Sun Path Diagram: London, UK
Summer Solstice
Spring Equinox
Autumn Equinox
Winter Solstice
Selected time
Hour ticks on all paths · labels on outer arc
Altitude
61.9°
above horizon
Azimuth
180.0°
S
Sunrise
03:48
solar time
Sunset
20:12
solar time
Daylight
16.4h
hours
Noon Altitude
61.9°
12:00 solar
Seasonal Summary: London, UK
Sunrise
Sunset
Daylight
Noon Alt
Noon Dir
Summer Solstice
03:48
20:12
16.4 h
61.9°
180° S
Spring Equinox
06:00
17:60
12.0 h
38.4°
180° S
Autumn Equinox
05:57
18:03
12.1 h
39.1°
180° S
Winter Solstice
08:12
15:48
7.6 h
15.1°
180° S
Solar positions use Spencer (1971) approximation (±0.01°). Times are solar time: apply longitude correction and daylight saving for local clock time. City coordinates from SimpleMaps (MIT licence) and GeoNames (CC BY 4.0). Not a substitute for professional daylight assessment under BR209 or EN 17037.