Historical clue formulations

• Only U.S. president from Delaware — 2026-03-30
• Only Catholic U.S. president besides J.F.K. — 2025-05-16
• President who campaigned on the slogan "Our best days still lie ahead" — 2024-02-18
• #46 — 2021-07-04
• 47th U.S. vice president — 2020-05-17
• #2 for #44 — 2020-02-11
• 2017 recipient of the Presidential Medal of Freedom — 2018-03-16
• Obama's veep — 2017-07-31
• Politico with the 2007 autobiography "Promises to Keep" — 2016-03-04
• Obama's veep — 2014-07-15
• Cheney's follower — 2013-02-10
• Ex-senator known as "Amtrak Joe" — 2012-07-24
• Cheney's successor — 2011-10-16
• First Catholic vice president of the U.S. — 2011-08-17
• Cheney's successor as vice president — 2009-05-05
• See 29-Down — 2009-01-20
• 1987-95 Senate Judiciary Committee head — 2001-11-17
• Delaware senator — 2001-01-14
• Delaware senator — 2000-09-23
• Joseph of the Senate — 1993-12-22