SUNSHINE DAY was first published in the FARM JOURNAL, although this version is a slight variation because the corner triangles meet in the middle traditionally, but here they stop at the edges of the center diamond.
Sun worship designs at this site include:
DESERT SUN (with Georgia O'Keeffe)
SUNBEAM AND SHADOW
SUNSHINE AND SHADOW
LIGHTS AND SHADOWS
SUNSHINE AND STAINED GLASS (with Sonia Delaunay)
RISING SUN (with Zinaida Serebriakova)
Compare with SUNDANCE,
illustrated in the left panel, and which began publication in the late 19th century —
SUNDANCE is further illustrated and with comments here!!