Ak'b'al, night, is third of the twenty, following Ik' the wind: after the wind passes, dark falls and it goes quiet. Its glyph is the inside of a house, or a covered face — the Maya grouped night with the house, the body's interior and the underworld: places invisible from outside where things nonetheless grow.
So Ak'b'al's mechanism is interiority and latency: dreams, intuition, the thought not yet spoken, the seed's time in the soil. Its power is in not being seen — people only really think without an audience; and there lies its difficulty too: in the dark anything is possible, fear included.
Where you'll recognise it: clearest alone, a rich inner world, many dreams, discomfort at being watched while you work, a mind that shuts when hurried. Running well, you're the deepest one: thinking things through, feeling layers others don't, able to guide people in the dark. Stuck, the dark eats you — thinking without moving, fear taken for truth, hiding inside and not coming out. In the sequence Ak'b'al is followed by K'an, seed: what the dark incubated must next be held in the hand. Your next step isn't thinking deeper. It's bringing out one thing you thought.