This I have earlier guessed is a sort of period counter and I still think that it has this function. We can therefore think 5 times.

Connected with my guess for the preceeding glyph that would imply 5 new moons.

But there could be other readings of course. A more reasonable guess than 5 new moons (which could have been expressed already in the preceeding glyph) is that we should read 5 nights. In the 30th period of Small Santiago / London there is a similar glyph.

Since writing about that glyph I have found another explanation for the 5 nights.