1.1 KiB
Introduction
Every month, your partner meets up with their best friend. Both of them have very busy schedules, making it challenging to find a suitable date! Given your own busy schedule, your partner always double-checks potential meetup dates with you:
- "Can I meet up on the first Friday of next month?"
- "What about the third Wednesday?"
- "Maybe the last Sunday?"
In this month's call, your partner asked you this question:
- "I'd like to meet up on the teenth Thursday; is that okay?"
Confused, you ask what a "teenth" day is. Your partner explains that a teenth day, a concept they made up, refers to the days in a month that end in '-teenth':
- 13th (thirteenth)
- 14th (fourteenth)
- 15th (fifteenth)
- 16th (sixteenth)
- 17th (seventeenth)
- 18th (eighteenth)
- 19th (nineteenth)
As there are also seven weekdays, it is guaranteed that each day of the week has exactly one teenth day each month.
Now that you understand the concept of a teenth day, you check your calendar. You don't have anything planned on the teenth Thursday, so you happily confirm the date with your partner.