| Case | Leap Year? | January 1 Falls on... | Friday 13 occurs in... |
| 1 | No | Sunday | January and October |
| 2 | No | Monday | April and July |
| 3 | No | Tuesday | September and December |
| 4 | No | Wednesday | June |
| 5 | No | Thursday | February, March, and November |
| 6 | No | Friday | August |
| 7 | No | Saturday | May |
| 8 | Yes | Sunday | January, April, and July |
| 9 | Yes | Monday | September and December |
| 10 | Yes | Tuesday | June |
| 11 | Yes | Wednesday | March and November |
| 12 | Yes | Thursday | February and August |
| 13 | Yes | Friday | May |
| 14 | Yes | Saturday | October |
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