The pair sitting back to back in Thursday presumably return standing up and looking at each other in the following glyph Hb9-42:

Hb9-39	Hb9-40	Hb9-41	Hb9-42
Hb9-43	Hb9-44	Hb9-45	Hb9-46	Hb9-47

9 * 40 = 360 and a new year is beginning beyond that, we can read from the numbers. The Y-formed hand in Hb9-40 signifies the 'dry branches' of toa. The standing and united twins in Hb9-42 probably depicts the situation half a year later, when the 1st and 2nd cycles of the year stand face to face (at midsummer).

3 glyphs are used to tell about the solstices surrounding the spring half of the year, and the next 4 glyphs could depict what happens in the 2nd half. The hard wood of the oak (the tree of Thursday) was used for door posts, which explains the twins.