Historical clue formulations

• The sun's is approximately 865,370 miles — 2022-03-25
• Pipe measure — 2014-10-23
• Line across a circle — 2014-02-03
• Ball measure — 2009-09-25
• 7,926 miles, for the earth — 2001-05-24
• Geometric measurement — 1998-08-10
• Thickness, as of a tree — 1995-03-26