The date is a pun:
Honey → hachimitsu → hachi mi (tsu) → hachi(8) mi(3).
A commemorative day established by the All-Japan Honey Association and the Japanese Beekeeping Honey Association.
They say honey is as sweet as a third of the amount of sugar, has skincare effects, relieves fatigue, boosts immunity, and improves bowel movements!If it is that good, that makes me want to eat it every day!