In the book "Tuesdays with Morrie" by Mitch Albom, Mitch visits his former sociology professor Morrie Schwartz, who is dying of ALS, every Tuesday for several months. The fact that they decide to meet on Tuesdays is ironic because Morrie is dying and their meetings are a reminder that time is running out for him. The title of the book "Tuesday's with Morrie" is also ironic because Tuesday's are usually seen as just another day of the week but for Morrie and Mitch, it's a special day where they spend time together and discuss life lessons.
Additionally, the irony may also be that Morrie is teaching Mitch life lessons on Tuesdays, the day of the week that is considered to be the least important and the most boring. Tuesdays are often seen as a "midweek slump" and the most mundane day of the week, but for Morrie and Mitch, it's a special day where they meet and discuss important topics about life, which gives Tuesdays a new significance for them.
Hence, the book revolves around the essential values of understanding the deep-rooted Morales and memories that we take along with in our journey of life.