In the calendar for the day (according to H/P/Q) a pu glyph appears at the beginning, presumably telling about how the sun has entered into our world:

1st period of the day
	Ha5-52	Ha5-53	Ha5-54	Ha5-55
	Pa5-35	Pa5-36	Pa5-37	Pa5-38
	Qa5-43	Qa5-44	Qa5-45	Qa5-46

An 'opening' has been created at the top, as if sun has hatched from his confining egg. Alternatively we recognize the moa triumphantly crying out, as for instance in Ca6-28: