Historical clue formulations

• On ___ with (even with) — 2018-06-11
• On ___ with (comparable to) — 2015-10-20
• On ___ with (equal to) — 2014-10-06
• On ___ with — 2013-12-06
• On ___ with — 2013-03-24
• On ___ with — 2013-01-24
• On ___ with (equal to) — 2011-10-26
• On ___ with (equal to) — 2010-07-19
• On ___ with (equal to) — 2009-10-20
• On ___ with — 2009-04-30
• On ___ with (even with) — 2008-12-31
• On ___ with (equal to) — 2008-11-23
• On ___ (equipotent) — 2006-09-23
• On ___ with — 2006-06-15
• On ___ with — 2005-01-02
• On ___ with (equal to) — 2002-05-27
• On ___ with (equal to) — 2002-01-28
• On ___ with — 2001-04-10
• On ___ with — 2001-02-28
• On ___ with — 2000-11-01
• On ___ with — 2000-08-09
• On ___ with (equal to) — 2000-02-01
• On ___ with — 1999-12-01
• On ___ with — 1999-02-16
• On ___ with — 1998-11-14
• On ___ (equipotent) — 1998-07-04
• On ___ with (equal to) — 1998-05-27
• On ___ with — 1997-06-27
• On ___ (commensurate) — 1997-04-26
• Be on ___ with (equal) — 1997-04-02
• On ____ with (equal to) — 1995-10-09
• On _____ with (equal to) — 1995-06-10
• On _____ with — 1994-10-02
• On _____ with — 1994-07-24
• On _____ with (equal to) — 1994-06-13
• On_____with — 1994-01-20