By inverting a sign its meaning is also inverted. Instead of a possible meaning equal or similar to that of vae ('sun is leaving'), the meaning presumably here should be 'moon is arriving'. The upper part of these inverted haati glyphs could indicate the crescent of waxing moon. The 2nd (Gb1-17) is thinner, quite in agreement with experience from the Mamari moon calendar where a thinner crescent apparently indicates waning moon.

Furthermore, the inverted person in Gb1-13 has vae at left - it is the spring sun leaving. He is twisted around into 'waning' (also the eating gesture is upside down - he is no longer growing).

The following glyph, Gb1-14, draws attention by being relatively uncomplicated. Counting its ordinal number from Gb8-30 we arrive at 244 = 4 * 61. It marks the end of the first half of the year. The beginning of the second half is located at Gb1-15, where hua poporo is the central sign. The sun leaving vae in Gb1-13 is mirrored in a pair of moon arriving haati (Gb1-16--17).