The Fault in Our Stars is a novel by John Green.
https://en.wikipedia.org/wiki/The_Fault_in_Our_Stars
I have studied old calendars at museums, they have 364 days only! One day is not marked! 13 x 28 days. Let's make calendar great again. ❤️
In response anna justice to her Publication
And the main character's surname is Waters. "Watch the water".