Historical clue formulations

• Island with ferries to Ibiza — 2025-08-17
• One of the Balearic Islands — 2021-11-05
• Mediterranean resort island — 2018-02-18
• One of Spain's Balearic Islands — 2016-06-12
• One of the Balearic Islands — 2014-03-09
• Mahon is its largest city — 2012-10-26
• One of the Balearic Islands — 2002-09-08
• Island whose chief port is Mahón — 2001-07-13
• One of the Balearics — 1999-05-16
• One of the Balearics — 1998-10-31
• Balearic island — 1995-06-21