Solar Overhang Simulator

Time & Date

Mar 21

12:00

Time of day 12:00

Day of year 80 (Mar 21)

Facade — click a side

Structure

Wall height 3.0m

Roof pitch 30°

E/W overhang (eave) 2.5m

N/S overhang (gable) 1.0m

Display

Sun rays Shadows Rain Table

Solar Data

Sun altitude —

Sun azimuth —

Profile angle —

Shadow depth —

Eave height —

Wall shade —

Direct sun hours —

Key dates at noon:

Equinox (Mar 21)—

Summer sol. (Jun 21)—

Winter sol. (Dec 21)—

Solar math: Spencer (1971) declination + equation of time.
Latitude 9.742°N, Longitude 99.979°E (UTC+7).
Gable roof — ridge runs N-S, eave sides face E-W.

Walls

Rafters

Columns

Roof

Sun path

Shadows

House

Sun ray

Shadow

Wall

Roof