Our task is to study the glyphs preceding day 314, and we should do it both in G and H. It is quicker done in G than in H (given that we are looking for 8 dark Venus days between the evening and morning star appearances). This is the picture

The Maya Indians had 250 days for Venus as evening star (though the correct figure is 263 days). But if we put the evening star appearance of Venus to side b (as I have suggested), then we do not have 8 dark days but 90 to search for (ending with Gb1-20).

8 is easier than 90. Let us look:

Gb1-7	Gb1-8	Gb1-9	Gb1-10	Gb1-11	Gb1-12
Gb1-13	Gb1-14	Gb1-15	Gb1-16	Gb1-17	Gb1-18
Gb1-19	Gb1-20	Gb1-21	Gb1-22	Gb1-23	Gb1-24

Gb1-12 belongs together with the similar manu rere at Gb1-4, and from the first to the second bird there are 8 glyphs. Then comes another group of 8 glyphs, ending with Gb1-20. They could represent the time between Venus as morning star and Venus as evening star - given that the Mayan convention with 90 days (instead of the correct 50 days between morning and evening star) is changed into an Easter Island convention with 8 days.

Or, the correct Mayan figure 8 days for the time between evening and morning star appearance of Venus was used also on Easteer Island, and - possibly - Gb1-13--20 could then represent these black nights - meaning that it is the evening star Venus which is beginning with Gb1-21.

Let us now look at H and identify the corresponding 8 days. The break in day 314 counted from Friday has Hb3-6 as glyph number 750 counted from Ha1-4:

Glyph numbers below are counted from Ha1-1.
Hb3-1	Hb3-2	Hb3-3 (750)	Hb3-4	Hb3-5	Hb3-6
313 = (750 - 3) / 3 + 64			day 314 from Friday

64 + 250 = 314, and the glyphs Hb3-4--6 therefore correspond to Gb1-20 (230 + 20 = 250).

Hb3-1--6 should accordingly be black, and maybe there will be only 6 * 3 = 18 preceding glyphs in the dark period:

Glyph numbers below are counted from Ha1-1.
Hb2-43	Hb2-44	Hb2-45	Hb2-46	Hb2-47	Hb2-48
311			312
Hb2-37	Hb2-38	Hb2-39	Hb2-40	Hb2-41	Hb2-42
309			310
Hb2-31	Hb2-32	Hb2-33	Hb2-34	Hb2-35	Hb2-36
307			308
Hb2-25	Hb2-26	Hb2-27	Hb2-28	Hb2-29	Hb2-30
305			306

Not impossible. Hb2-28--29 (toga) could indicate a coming dark period. And henua ora in the following day (307) is the recycling station.

Hua poporo in day 308 could correspond to hua poporo in day 309 in G:

Gb1-13 (307)	Gb1-14 (308)	Gb1-15 (309)	Gb1-16 (310)
Gb1-17 (311)	Gb1-18 (312)	Gb1-19 (313)	Gb1-20 (314)

The conspicious 'fishing hook' in Gb1-18 could correspond to the 'hook' ending in a hole in Hb2-46 (or in the 'hook' formed by the right lower 'limb' in niu):

Hb2-46	Hb2-47	Hb2-48
312

The pair of niu with haga (?) signs 'underlining' manu rere in the center could maybe correspond to the double upside down haati in Gb1-17--18: