108 can be read as 30 + 36 + 42 = (5 + 6 + 7) * 6. Counting also the jokers there are 2 * 54 = 108 cards in a double deck.

In the regular pentagon the internal angles are 180 * (5 - 2) / 5 = 108º. However, in the E calendar 54 probably first of all represents 3 * 18 (and 108 = 6 * 18).

South of the equator the summer half of the year is ca 180 days, and combining 18 with the fundamental solar number 6 we reach 108. Half that number comes before the midpoint and the other half after.

The midpoint lies between periods 10 and 11, exactly as we earlier have discovered by way of henua ora in the 10th and vero in the 11th period. Disregarding the 1st period there are 9 periods up to the midpoint and 9 after. The autumn vero is located in the 19th period, i.e. in the last of the summer periods (according to the structure observed in the number of glyphs). The summer vero (11th period) inaugurates the 2nd half of the year and the 3rd quarter, while the autumn vero (19th period) ends summer and the 3rd quarter.

During 9 periods with 54 glyphs sun advances and during 9 periods with 54 glyphs sun declines. These two phases have each 6 * 9 = 54 glyphs. Each glyph therefore may correspond to a duration of 3⅓ days (180/54 = 3⅓). To avoid fractions it is necessary to count in durations of at least 10 days.

Each half-year has 18 * 10 = 9 * 20 = 180 days, but 54 = 3 * 18 suggests that each half-year is divided in 3 * 60 days, 3 periods which each is divided in 3 lesser periods à 20 days.