Here Comes the Sun Granny Square is approximately 6x6 inches when worked with worsted weight yarn and a 4mm hook. When using DK yarn and a 3.5mm hook, the square is approximately 4.5x4.5 inches.
This square was designed to be paired with The Man in the Moon, Luminosity and Lunar Halo Granny Squares. They work up to the same size, and have the same stitch counts around the last rows to make them perfect companions.