380

380 in other calendars
Gregorian calendar	380; CCCLXXX
Ab urbe condita	1133
Assyrian calendar	5130
Balinese saka calendar	301–302
Bengali calendar	−213
Berber calendar	1330
Buddhist calendar	924
Burmese calendar	−258
Byzantine calendar	5888–5889
Chinese calendar	己卯年 (Earth Rabbit); 3076 or 3016; — to —; 庚辰年 (Metal Dragon); 3077 or 3017
Coptic calendar	96–97
Discordian calendar	1546
Ethiopian calendar	372–373
Hebrew calendar	4140–4141
Hindu calendars
- Vikram Samvat	436–437
- Shaka Samvat	301–302
- Kali Yuga	3480–3481
Holocene calendar	10380
Iranian calendar	242 BP – 241 BP
Islamic calendar	249 BH – 248 BH
Javanese calendar	262–263
Julian calendar	380; CCCLXXX
Korean calendar	2713
Minguo calendar	1532 before ROC; 民前1532年
Nanakshahi calendar	−1088
Seleucid era	691/692 AG
Thai solar calendar	922–923
Tibetan calendar	阴土兔年; (female Earth-Rabbit); 506 or 125 or −647; — to —; 阳金龙年; (male Iron-Dragon); 507 or 126 or −646

Millennium:	1st millennium
Centuries:	3rd century – 4th century – 5th century
Decades:	350s 360s 370s – 380s – 390s 400s 410s
Years:	377 378 379 – 380 – 381 382 383

380 (CCCLXXX) was a leap year starting on Wednesday of the Julian calendar, the 380th year of the Common Era (CE) and Anno Domini (AD) designations, the 380th year of the 1st millennium, the 80th year of the 4th century, and the 1st year of the 380s decade. As of the start of 380, the Gregorian calendar was 1 day ahead of the Julian calendar, which was the dominant calendar of the time.

Events

January or February – Emperor Theodosius I is baptized.
February 27 – Edict of Thessalonica: Theodosius I, with co-emperors Gratian and Valentinian II, say that all Roman citizens should become Christians.
The Rock of Cashel is built in Ireland.
The Visigothic chieftain Fritigern dies. His rival Athanaric becomes king of the entire Gothic nation.