The 4th century was the time period which lasted from 301 (CCCI) through 400 (CD). In the West, the early part of the century was shaped by Constantine the Great, who became the first Roman emperor to adopt Christianity. Gaining sole reign of the empire, he is also noted for re-establishing a single imperial capital, choosing the site of ancient Byzantium in 330 to build the city soon called Nova Roma ; it was later renamed Constantinople in his honor.
The 380s decade ran from January 1, 380, to December 31, 389.
The 430s decade ran from January 1, 430, to December 31, 439.
The 420s decade ran from January 1, 420, to December 31, 429.
The 450s decade ran from January 1, 450, to December 31, 459.
Year 451 (CDLI) was a common year starting on Monday of the Julian calendar. At the time, it was known as the Year of the Consulship of Marcianus and Adelfius. The denomination 451 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Year 427 (CDXXVII) was a common year starting on Saturday of the Julian calendar. At the time, it was known as the Year of the Consulship of Hierus and Ardabur. The denomination 427 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
The 390s decade ran from January 1, 390 to December 31, 399
The 440s decade ran from January 1, 440, to December 31, 449.
Year 366 (CCCLXVI) was a common year starting on Sunday of the Julian calendar. At the time, it was known as the Year of the Consulship of Gratianus and Dagalaifus. The denomination 366 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
The 360s decade ran from January 1, 360, to December 31, 369.
The 340s decade ran from January 1, 340, to December 31, 349.
The 370s decade ran from January 1, 370, to December 31, 379.
Year 421 (CDXXI) was a common year starting on Saturday of the Julian calendar. At the time, it was known as the Year of the Consulship of Agricola and Eustathius. The denomination 421 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Year 386 (CCCLXXXVI) was a common year starting on Thursday of the Julian calendar. At the time, it was known as the Year of the Consulship of Honorius and Euodius. The denomination 386 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Year 384 (CCCLXXXIV) was a leap year starting on Monday of the Julian calendar. At the time, it was known as the Year of the Consulship of Ricomer and Clearchus. The denomination 384 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for giving names to years.
Year 380 (CCCLXXX) was a leap year starting on Wednesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Augustus and Augustus. The denomination 380 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Year 291 (CCXCI) was a common year starting on Thursday of the Julian calendar. At the time, it was known as the Year of the Consulship of Tiberianus and Dio. The denomination 291 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Year 369 (CCCLXIX) was a common year starting on Thursday of the Julian calendar. At the time, it was known as the Year of the Consulship of Galates and Victor. The denomination 369 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Year 344 (CCCXLIV) was a leap year starting on Sunday of the Julian calendar. At the time, it was known as the Year of the Consulship of Leontius and Bonosus. The denomination 344 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
