990 (CMXC) was a common year starting on Wednesday of the Julian calendar, the 990th year of the Common Era (CE) and Anno Domini (AD) designations, the 990th year of the 1st millennium, the 90th year of the 10th century, and the 1st year of the 990s decade. As of the start of 990, the Gregorian calendar was 5 days ahead of the Julian calendar, which was the dominant calendar of the time.

Millennium: 1st millennium
Centuries: 9th century10th century11th century
Decades: 960s  970s  980s  – 990s –  1000s  1010s  1020s
Years: 987 988 989990991 992 993
990 in other calendars
Gregorian calendar990
CMXC
Ab urbe condita1743
Armenian calendar439
ԹՎ ՆԼԹ
Assyrian calendar5740
Balinese saka calendar911–912
Bengali calendar397
Berber calendar1940
Buddhist calendar1534
Burmese calendar352
Byzantine calendar6498–6499
Chinese calendar己丑(Earth Ox)
3686 or 3626
    — to —
庚寅年 (Metal Tiger)
3687 or 3627
Coptic calendar706–707
Discordian calendar2156
Ethiopian calendar982–983
Hebrew calendar4750–4751
Hindu calendars
 - Vikram Samvat1046–1047
 - Shaka Samvat911–912
 - Kali Yuga4090–4091
Holocene calendar10990
Iranian calendar368–369
Islamic calendar379–380
Japanese calendarEiso 3 / Shōryaku 1
(正暦元年)
Javanese calendar891–892
Julian calendar990
CMXC
Korean calendar3323
Minguo calendar922 before ROC
民前922年
Nanakshahi calendar−478
Seleucid era1301/1302 AG
Thai solar calendar1532–1533
Tibetan calendar阴土牛年
(female Earth-Ox)
1116 or 735 or −37
    — to —
阳金虎年
(male Iron-Tiger)
1117 or 736 or −36

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