May 1999 Holidays
| Holidays May, 1999 | Week Day | Date |
| Cinco de Mayo | Wednesday | May 5, 1999 |
| Mother's Day | Sunday | May 9, 1999 |
| National Maritime Day | Saturday | May 22, 1999 |
| National Missing Children's Day | Tuesday | May 25, 1999 |
| Memorial Day | Monday | May 31, 1999 |
| Holidays May, 1999 | Week Day | Date |
| Cinco de Mayo | Wednesday | May 5, 1999 |
| Mother's Day | Sunday | May 9, 1999 |
| National Maritime Day | Saturday | May 22, 1999 |
| National Missing Children's Day | Tuesday | May 25, 1999 |
| Memorial Day | Monday | May 31, 1999 |