SN4 glyphs from: Maya Hieroglyphic Database: Catalog. Drawings by Matthew Looper, except codical examples by Martha Macri.

SN4a #1 CHAN; KAN four, number (head variant) 04

SN4a #2 CHAN; KAN four, number (head variant) 04

SN4b #1 K'IIN day; sun, period: 1 day, k'in; hab patron: Yaxk'in

SN4b #2 K'IIN day; sun, period: 1 day, k'in; hab patron: Yaxk'in

SN4b #3 K'IIN day; sun, period: 1 day, k'in; hab patron: Yaxk'in