1238 (MCCXXXVIII) was a common year starting on Friday of the Julian calendar, the 1238th year of the Common Era (CE) and Anno Domini (AD) designations, the 238th year of the 2nd millennium, the 38th year of the 13th century, and the 9th year of the 1230s decade. As of the start of 1238, the Gregorian calendar was 7 days ahead of the Julian calendar, which was the dominant calendar of the time.

Millennium: 2nd millennium
Centuries: 12th century13th century14th century
Decades: 1200s  1210s  1220s  – 1230s –  1240s  1250s  1260s
Years: 1235 1236 123712381239 1240 1241
1238 in other calendars
Gregorian calendar1238
MCCXXXVIII
Ab urbe condita1991
Armenian calendar687
ԹՎ ՈՁԷ
Assyrian calendar5988
Balinese saka calendar1159–1160
Bengali calendar645
Berber calendar2188
English Regnal year22 Hen. 3 – 23 Hen. 3
Buddhist calendar1782
Burmese calendar600
Byzantine calendar6746–6747
Chinese calendar丁酉(Fire Rooster)
3934 or 3874
    — to —
戊戌年 (Earth Dog)
3935 or 3875
Coptic calendar954–955
Discordian calendar2404
Ethiopian calendar1230–1231
Hebrew calendar4998–4999
Hindu calendars
 - Vikram Samvat1294–1295
 - Shaka Samvat1159–1160
 - Kali Yuga4338–4339
Holocene calendar11238
Igbo calendar238–239
Iranian calendar616–617
Islamic calendar635–636
Japanese calendarKatei 4 / Ryakunin 1
(暦仁元年)
Javanese calendar1147–1148
Julian calendar1238
MCCXXXVIII
Korean calendar3571
Minguo calendar674 before ROC
民前674年
Nanakshahi calendar−230
Thai solar calendar1780–1781
Tibetan calendar阴火鸡年
(female Fire-Rooster)
1364 or 983 or 211
    — to —
阳土狗年
(male Earth-Dog)
1365 or 984 or 212

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