Monday 15th June 1998.
The given date was a Monday.
The third Monday of September 2001 fell on September 17.
The given date was a Monday.
The given date was a Monday.
The given date was a Monday.
The given date was a Monday.
The given date was a Monday.
The given date was a Monday.
The given date was a Monday.
The given date was a Monday.
21 June 1998
It is generally observed on the third Monday in April. In 2014, that means the date will fall on Monday, April 21.