9 * 20 = 180
	Yc1-3	Yc1-4	Yc1-5	Yc1-6	Yc1-7	Yc1-8	Yc1-9
	Yc1-10	Yc2-1

12 * 20 = 240
	Yc2-2	Yc2-3	Yc2-4 (240)	Yc2-5	Yc2-6	Yc3-1
	Yc3-2	Yc3-3	Yc3-4 (360)	Yc3-5	Yc3-6	Yc3-7

Mercury in Yc2-1 identifies where the first 180 days are ending. He also appears in Yc3-1 (i.e. Yd1-1), where the day number is 300, maybe alluding to how Sun has reached the end of high summer (when we count 10 * 30 beginning at winter solstice). A crack is seen in his 'windpipe' at right.

Koti in Yc3-4 is at day 360. Saturn is the obvious choice of planet. Saturn also rules ua at Yc2-4. 3 * 4 = 12 and 2 * 4 = 8.

Winter solstice possibly occurs at Yc3-7 (where the front 'bar of light' is sloping down).