As Mikan-chan kindly posted, it dawns earlier day by day. Sunlight came deep into rooms in winter, helped Mei-Shun to dry futon indoors when gale tries to blow them down on the ground. However, it draws little by little toward the border between 広縁=hiro-en, wooden floor and 畳＝tatami, straw mat. Thanks a lot for sparing her time to cover 縁＝heri, edge of the latter to avoid suntan.