facing view of San Francisco, with the Pacific Ocean at the far
horizon. The site of the Sun
Dial is indicated near
south-east corner of Golden Gate Park.
In San Francisco at the south-eastern corner of
Golden Gate Park you will
find the quiet Inner
This low-impact community of traditional three-flats and small apartment buildings draws out a dozen blocks to the west in the shadow of Mt. Parnassus and the University of California Medical Center.
Irving Street is the principle commercial strip and at the corner of 9th Avenue the "N" street car turns south before streaming to the beach on Judah.
Hugo Street, site of 'Made
In The Shade', stretches six blocks westward from Arguello
Street to Seventh Avenue. It parallels Lincoln Avenue, the
southern border of Golden Gate Park.
For a baker's dozen of years from 1977 through 1990, I called this tidy neighborhood home and lived in a converted attic on Hugo Street, between 3rd and 4th.
The roof was pitched and a sky light had been added facing more or less west. Absent fog or overcast each afternoon, a brilliant sunbeam would stream through the skylight, cross the floor and climb the opposite wall.
As the sun sets down in the
the beam of light moves upward toward the ceiling. As the
migrates from north to south as the seasons change, the beam of light
likewise oscillates from south to north.
view of the Sun Dial location
on Hugo Street. The red arrow
indicates the general
direction of incoming sun from the west during the afternoon.
the far background the Veterans hospital at Ft. Miley is visible behind
the trees of Golden Golden Gate Park.
It took only a guitar pick, pasted in
of the plexiglass sky light, to cast a shadow on
the west-facing wall sufficient to track the setting sun with
|The beam of afternoon sunlight approaches the target wall.|
|This series of daily readings (all at 4:00 P.M.) illustrates the movement of the shadow from day to day during the spring (and the fall) when daily variance is the greatest. By the time of the summer solstice the change from day to is miniscule. As July stretches into August and fall, the daily migration has reversed in direction and begun to increase.|
Leap Year effect is
demonstrated for May 2nd. Individual minutes are tracked from
3:50 P.M. to 4:00 P.M. in two consecutive years, 1982-1983. The
precession of 1/4 of a day is evident in the two parallel sun-tracks.
Readings in 1986 were synonymous with 1982.
The Analemma demonstrated