1523 (MDXXIII) was a common year starting on Thursday of the Julian calendar, the 1523rd year of the Common Era (CE) and Anno Domini (AD) designations, the 523rd year of the 2nd millennium, the 23rd year of the 16th century, and the 4th year of the 1520s decade. As of the start of 1523, the Gregorian calendar was 10 days ahead of the Julian calendar, which was the dominant calendar of the time.

Millennium: 2nd millennium
Centuries: 15th century16th century17th century
Decades: 1490s  1500s  1510s  – 1520s –  1530s  1540s  1550s
Years: 1520 1521 152215231524 1525 1526
1523 in other calendars
Gregorian calendar1523
MDXXIII
Ab urbe condita2276
Armenian calendar972
ԹՎ ՋՀԲ
Assyrian calendar6273
Balinese saka calendar1444–1445
Bengali calendar930
Berber calendar2473
English Regnal year14 Hen. 8 – 15 Hen. 8
Buddhist calendar2067
Burmese calendar885
Byzantine calendar7031–7032
Chinese calendar壬午(Water Horse)
4219 or 4159
    — to —
癸未年 (Water Goat)
4220 or 4160
Coptic calendar1239–1240
Discordian calendar2689
Ethiopian calendar1515–1516
Hebrew calendar5283–5284
Hindu calendars
 - Vikram Samvat1579–1580
 - Shaka Samvat1444–1445
 - Kali Yuga4623–4624
Holocene calendar11523
Igbo calendar523–524
Iranian calendar901–902
Islamic calendar929–930
Japanese calendarDaiei 3
(大永3年)
Javanese calendar1440–1442
Julian calendar1523
MDXXIII
Korean calendar3856
Minguo calendar389 before ROC
民前389年
Nanakshahi calendar55
Thai solar calendar2065–2066
Tibetan calendar阳水马年
(male Water-Horse)
1649 or 1268 or 496
    — to —
阴水羊年
(female Water-Goat)
1650 or 1269 or 497

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