Fait mathématique: 1055 is the maximum value of n so that there exist 5 denominations of stamps so that every postage from 1 to n can be paid for with at most 10 stamps.
Culture générale: 1055 is an unremarkable number.
Date historique: November 20th is the day in 1994 that the Angolan government and UNITA rebels sign the Lusaka Protocol in Zambia, ending 19 years of civil war (localized fighting resumes the next year).