1. Counted from spring equinox north of the equator the 13th hour is beginning only a pair of days after Denebola has risen heliacally. From winter solstice south of the equator spring equinox comes after 87 days:
South of the equator it possibly would be more natural to count right ascension from September 16 than from spring equinox north of the equator. But the map from north of the equator was probably kept without change. Summer 'in the sky' ended after 12h. The glyph number at 12h may have been regarded as 118 + 472 = 590 = 20 * 29½. The person at left (in the past) has a very high neck, presumably an indication of the high sky in summer. The 18th henua period is beginning with September 22 (autumn equinox north of the equator):
Ga5-7 (at 12h) is in the middle position between the equinoxes, at September 19. Perhaps we should in the text see the situation south of the equator first and then the situation north of the equator (with sky in the center):
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