People
“This must be Thursday”, said Arthur musing to himself, sinking low over his beer, “I never could get the hang of Thursdays.”
— Douglas Adams ‧ The Hitchhiker's Guide to the Galaxy

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
A gently comic moment of weary resignation. The speaker, slumped over a drink, decides the day must be Thursday and admits never really managing that particular day of the week. It treats a weekday like a skill you can fail to master.
Context reviewed