Seems like Ryuuichi drew this after viewing an eclipse irl. From Kogasa, Ichirin and Unzan's presence here I assume inclement weather nearly interfered with the viewing?
Anyways lookit that umbrella tongue go.
Congrats!!
Annular Solar EclipseAn annular (ring-shaped) solar eclipse is one where the moon blocks out the center of the sun, but a ring of sun is still visible all around the outside.