The 2040s (pronouncit "twenty-forties") is a decade o the gregorian calendar thon will begin on january 1, 2040, an will end on december 31, 2049.

Millennium: 3rd millennium
Centuries: 20t century21st century22nt century
Decades: 2010s 2020s 2030s2040s2050s 2060s 2070s
Years: 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049

Notable predictions an known eventsEedit




  • Julie 1: hong kong's special administrative status ends. Accordin tae chapter A, article 5 o hong kong's basic law, "the socialist system an policies shall no be practisit i the hong kong special administrative region, an the previous capitalist system an way o life shall remain unchangit for 50 years." the basic law wis adoptit i 1997; thae 50 year come tae an end i 2047.



  1. ""High Power MPD Nuclear Electric Propulsion (NEP) for Artificial Gravity HOPE Missions to Callisto" trajectory.grc.nasa.gov" Retrieved January 12, 2020.
  2. Ortman, Jennifer M.; Guarneri, Christine E. (2009), "United States Population Projections: 2000 to 2050" , 2009 National Population Projections (PDF), United States of America: United States Census Bureau, retrived January 12, 2020