Historical clue formulations

• Philippine seaport with a repetitive name — 2026-03-01
• Philippines' ___ City — 2017-05-12
• Philippine province with a repetitive name — 2014-09-14
• Philippine seaport with a reduplicative name — 2013-12-24
• Port on the Panay Gulf — 2011-01-15
• Philippine port — 2010-07-31
• Repetitively named Philippine province — 2009-12-01
• Philippine seaport — 2009-06-17
• Philippine port — 2006-11-19
• Philippine province or its capital — 2004-03-07
• District in the Philippines — 2000-06-06
• Panay seaport with a repetitive name — 1998-01-25