Historical clue formulations

• Realtor's showing — 2017-09-25
• Realtor's big day ... or what each word in the answers to the starred clues can do — 2016-11-08
• *New neighbors event — 2010-01-26
• Realtor's event — 2006-08-28
• Room check-out time? — 2003-05-17
• Welcoming party — 2000-04-06
• Uncrashable party — 1999-08-27