Brewer's: Gules of August
(The). The 1st of August (from Latin, gula, the throat), the entrance into, or first day of that month. (
August 1 is Lammas Day, a quarter-day in Scotland, and half-quarter-day in England.
“`Gula Augusti' initium mensis Augusti. Le Gule d'August, in statuo Edw. III., a. 31 c. 14, averagium æstivale fleri debet inter Hokedai et gulam Augusti.” —
(“Hokeday est dies Martis, qui quindenam Pasch expletam proxime excipit.”—Vol. iv. p. 65 col. 1.)