Possible Clues:

• Number of centuries needed for MCC? 4, perhaps
• Number of Apostles
• 17Ac 27 18Ac (or 17D 16Ac 5D 18Ac) -- with 3D (part 1) it could make 20D with 3D (part 2), alphanumerically
• Time you and I have to grab a little bit of lunch?
• Highest number on clock in taxi indicated?
• The number of people on juries with initial letters from Third World to first lady hiding low
• Time for hands to meet team with one extra?
• One, two and three to start with, you and I to half evolve?
• One under a baker's dozen
• Figure in our hearts losing nothing after time