三日

1. Origins, structure, and basic meaning

• Structure: 三日 (みっか) means either a duration of three days or the third day of a month.
• Basic usage: One plans a three-day stay in Kyoto; a meeting is scheduled for the afternoon of the third.

2. Common pitfalls and similar expressions

• Three-day duration and calendar date
  • Directly modifying 滞在する gives duration; 三日の午後 gives a date. English must distinguish “three days” from “the third.”