Fait général: 1999 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 1999 is the smallest number whose digits add to 28.
Culture générale: 1999 is an unremarkable number.
Date historique: June 21st is the day in 1900 that Baron Eduard Toll, leader of the Russian Polar Expedition of 1900, departed Saint Petersburg in Russia on the explorer ship Zarya, never to return.