The 830s decade ran from January 1, 830, to December 31, 839.
The 780s decade ran from January 1, 780, to December 31, 789.
The 700s decade ran from January 1, 700, to December 31, 709.
The 640s decade ran from January 1, 640, to December 31, 649.
The 650s decade ran from January 1, 650, to December 31, 659.
The 660s decade ran from January 1, 660, to December 31, 669.
The 680s decade ran from January 1, 680, to December 31, 689.
The 960s decade ran from January 1, 960, to December 31, 969.
The 590s decade ran from January 1, 590, to December 31, 599.
Year 751 (DCCLI) was a common year starting on Friday of the Julian calendar. The denomination 751 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 758 (DCCLVIII) was a common year starting on Sunday of the Julian calendar. The denomination 758 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 961 (CMLXI) was a common year starting on Tuesday of the Julian calendar.
Year 641 (DCXLI) was a common year starting on Monday of the Julian calendar. The denomination 641 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 643 (DCXLIII) was a common year starting on Wednesday of the Julian calendar. The denomination 643 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 653 (DCLIII) was a common year starting on Tuesday of the Julian calendar. The denomination 653 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 654 (DCLIV) was a common year starting on Wednesday of the Julian calendar. The denomination 654 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 660 (DCLX) was a leap year starting on Wednesday of the Julian calendar. The denomination 660 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 730 (DCCXXX) was a common year starting on Sunday of the Julian calendar. The denomination 730 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 895 (DCCCXCV) was a common year starting on Wednesday of the Julian calendar.
Constans II, nicknamed "the Bearded", was the Byzantine emperor from 641 to 668. Constans was the last attested emperor to serve as consul, in 642, although the office continued to exist until the reign of Leo VI the Wise. His religious policy saw him steering a middle line in disputes between the Orthodoxy and Monothelitism by refusing to persecute either and prohibited discussion of the natures of Jesus Christ under the Type of Constans in 648. His reign coincided with Muslim invasions under Mu'awiya I in the late 640s to 650s. Constans was the first emperor to visit Rome since the fall of the Western Roman Empire in 476, and the last one to visit Rome while it was still held by the Empire.
