Why are those three 'balls' so irregular? Is it because it is a 'dark' time without proper illumination and guidlines? This idea I have used to explain the irregular henua in e.g. Saturday. It may be a principle used when necessary in the rongorongo texts.

In my efforts to understand GD53 I started from the axiom that the regular variant means 3 solar double-months in general. Then I explained the twin variants with 'middle line' adjusted somewhat to the left respectively somewhat to the right as more precise: summer respectively winter half-years.

Next there was the problem with glyphs (e.g. Ka4-8) where the 'middle line' not divided the 'balls' but appeared to be a mark that what was seen at left and at right were different balls. I don't feel quite comfortable with my explanation that what is seen at left is another half-year than what is seen at right. But I have no better idea.

Then there were glyphs with irregular 'balls' and bent 'middle line' (e.g. Pb3-5). By way of parallels I arrived at the conclusion that these glyphs were located at winter solstice.

Everything seems to revolve around those 5 / 6 dark nights, when the old sun 'dies'. On the Gateway of the Sun in Tiahuanaco we can read that we must blow the trumpet to get some life back into him. (Just as at Judgment Day the trumpet will sound to wake up all the dead.)

I must check and see which other variants of GD53 appear in H.