A minimum of 1 and a maximum of 3.
Quick Explanation:
- A Friday the 13th happens when the 13th day of a month lands on a Friday.
- Since there are 12 months, at least one will always align with a Friday.
- The maximum occurs when three different months have a 13th that falls on a Friday.
Examples:
- Minimum (1) → 2021 (Only August 13).
- Maximum (3) → 2015 & 2026 (February 13, March 13, November 13).
Pattern:
- If January 1st is a Thursday (normal year) or Sunday (leap year), the year will have 3 Friday the 13ths.
