The 800s decade ran from January 1, 800, to December 31, 809.
The 810s decade ran from January 1, 810, to December 31, 819.
The 820s decade ran from January 1, 820, to December 31, 829.
The 830s decade ran from January 1, 830, to December 31, 839.
The 840s decade ran from January 1, 840, to December 31, 849.
The 760s decade ran from January 1, 760, to December 31, 769.
The 750s decade ran from January 1, 750, to December 31, 759.
The 730s decade ran from January 1, 730, to December 31, 739.
The 710s decade ran from January 1, 710, to December 31, 719.
The 700s decade ran from January 1, 700, to December 31, 709.
Year 814 (DCCCXIV) was a common year starting on Sunday of the Julian calendar, the 814th year of the Common Era (CE) and Anno Domini (AD) designations, the 814th year of the 1st millennium, the 14th year of the 9th century, and the 5th year of the 810s decade.
The 640s decade ran from January 1, 640, to December 31, 649.
The 660s decade ran from January 1, 660, to December 31, 669.
The 670s decade ran from January 1, 670, to December 31, 679.
The 690s decade ran from January 1, 690, to December 31, 699.
Year 809 (DCCCIX) was a common year starting on Monday of the Julian calendar, the 809th year of the Common Era (CE) and Anno Domini (AD) designations, the 809th year of the 1st millennium, the 9th year of the 9th century, and the 10th and last year of the 800s decade.
Year 756 (DCCLVI) was a leap year starting on Thursday of the Julian calendar, the 756th year of the Common Era (CE) and Anno Domini (AD) designations, the 756th year of the 1st millennium, the 56th year of the 8th century, and the 7th year of the 750s decade. The denomination 756 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 765 (DCCLXV) was a common year starting on Tuesday of the Julian calendar. The denomination 765 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 737 (DCCXXXVII) was a common year starting on Tuesday of the Julian calendar. The denomination 737 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.
Year 640 (DCXL) was a leap year starting on Saturday of the Julian calendar. The denomination 640 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.
