2040 (MMXL) will be a leap year starting on Sunday of the Gregorian calendar, the 2040th year of the Common Era (CE) and Anno Domini (AD) designations, the 40th year of the 3rd millennium, the 40th year of the 21st century, and the 1st year of the 2040s decade.

Millennium: 3rd millennium
Centuries: 20th century21st century22nd century
Decades: 2010s  2020s  2030s  – 2040s –  2050s  2060s  2070s
Years: 2037 2038 203920402041 2042 2043
2040 in other calendars
Gregorian calendar2040
MMXL
Ab urbe condita2793
Armenian calendar1489
ԹՎ ՌՆՁԹ
Assyrian calendar6790
Bahá'í calendar196–197
Balinese saka calendar1961–1962
Bengali calendar1447
Berber calendar2990
British Regnal yearN/A
Buddhist calendar2584
Burmese calendar1402
Byzantine calendar7548–7549
Chinese calendar己未(Earth Goat)
4736 or 4676
    — to —
庚申年 (Metal Monkey)
4737 or 4677
Coptic calendar1756–1757
Discordian calendar3206
Ethiopian calendar2032–2033
Hebrew calendar5800–5801
Hindu calendars
 - Vikram Samvat2096–2097
 - Shaka Samvat1961–1962
 - Kali Yuga5140–5141
Holocene calendar12040
Igbo calendar1040–1041
Iranian calendar1418–1419
Islamic calendar1461–1462
Japanese calendarReiwa 22
(令和22年)
Javanese calendar1973–1974
Juche calendar129
Julian calendarGregorian minus 13 days
Korean calendar4373
Minguo calendarROC 129
民國129年
Nanakshahi calendar572
Thai solar calendar2583
Tibetan calendar阴土羊年
(female Earth-Goat)
2166 or 1785 or 1013
    — to —
阳金猴年
(male Iron-Monkey)
2167 or 1786 or 1014
Unix time2208988800 – 2240611199

Predicted events change

February change

May change

September change

November change

Unknown Dates change

  • Climatologists predict that sometime in 2040 the Arctic Ocean will be free of ice, at least during the autumn. (News reports, December 2006).

Fictional events change