Historical clue formulations

• Center of the Cyclades — 2015-10-03
• Island where Artemis was born — 2013-12-27
• Apollo's birthplace — 2012-04-28
• Apollo's birthplace — 2007-10-06
• Site of an oracle of Apollo — 2003-08-19
• Cyclades island — 2000-02-20
• Isle on which Apollo was born — 1997-03-30