Ideas:

1. Obviously each day of the week in this calendar has a standing person as its first glyph. I think this is like a presentation, first you tell who is the 'person', then you tell about him. That is the Polynesian custom.

2. One arm is held high as if lending support to the Sun, meaning - I guess - that Monday, Tuesday and Wednesday are the primary supporters of the Sun.

3. There is something below the elbow of the arm held high. I believe there must be a meaning with this elbow adornment, i.e. that we should read it as a sign. Everything written has a meaning (though perhaps not nowadays).

4. Possibly the meaning of the elbow adornment is the 'way' of the moon. At left we see a rather short path (= Waxing Moon), then a sharp bend (= Full Moon) followed by a long stretch obliquely downwards (= Waning Moon) which ends in another turn, not so sharp this time, followed by a short tapering 'finger' (= New Moon before its 'fire'). Note that the Waxing Moon is open at its start. This would be an elegant graphic illustration of the fact that the new moon is there already in the dark phase.

5. This person is shown in full figure (as is the Sun-person). In contrast, the feet of the 5 succeeding persons are not visible. I guess this means that Sun and Moon belong together (like man and wife or like the two eyes of god). But possibly there is also a meaning of reliable appearance and high status.