SUN GRAPH

Location

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Latitude Longitude

Name on sheet Time zone

Year Reference

Size Orientation

Equinox / solstice markers Reading aids (times on 1st of month) Fine grid (15 min / weeks / day ticks) Band labels along curves

Sunrise / sunset: Sun centre at −0.833° (upper limb on the horizon, incl. refraction)
Civil twilight: Sun centre between −0.833° and −6°
Nautical twilight: −6° to −12°
Astronomical twilight: −12° to −18°
Night: Sun below −18°
Solar noon / midnight: Upper / lower transit of the sun

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