Historical clue formulations

• Safari Capital of the World — 2016-07-15
• Capital near the Great Rift Valley — 2015-06-19
• Uhuru Park locale — 2010-07-09
• The Green City in the Sun — 2008-10-11
• Safari-goer's starting point — 2000-09-08
• Capital near a game reserve — 1999-11-25
• Richard Leakey's birthplace — 1997-12-21