Lunadÿn is the fifth day of the 10-day week in the Common Calendar, and the first of two consecutive “light days” that fall mid-week. On the light days, those who can typically work half-days on each of the light days, or work a full day on one in order to take the other off entirely. It is preceded by Lassamistradÿn and is followed by Ilimoradÿn. It is named after Adnati’s largest moon, Lunaal.