The 800s decade ran from January 1, 800, to December 31, 809.
Year 800 (DCCC) was a leap year starting on Wednesday of the Julian calendar, the 800th year of the Common Era (CE) and Anno Domini (AD) designations, the 800th year of the 1st millennium, the 100th and last year of the 8th century, and the 1st year of the 800s decade. It was around this time that the Anno Domini calendar era became the prevalent method in Europe for naming years, so from this time on, the years began to be known as 800 and onwards.
The 780s decade ran from January 1, 780, to December 31, 789.
The 770s decade ran from January 1, 770, to December 31, 779.
Year 710 (DCCX) was a common year starting on Wednesday of the Julian calendar. The denomination 710 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 774 (DCCLXXIV) was a common year starting on Saturday of the Julian calendar. The denomination 774 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 802 (DCCCII) was a common year starting on Saturday of the Julian calendar, the 802nd year of the Common Era (CE) and Anno Domini (AD) designations, the 802nd year of the 1st millennium, the 2nd year of the 9th century, and the 3rd year of the 800s decade.
Year 775 (DCCLXXV) was a common year starting on Sunday of the Julian calendar. The denomination 775 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 776 (DCCLXXVI) was a leap year starting on Monday of the Julian calendar. The denomination 776 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 777 (DCCLXXVII) was a common year starting on Wednesday of the Julian calendar, the 777th year of the Common Era (CE) and Anno Domini (AD) designations, the 777th year of the 1st millennium, the 77th year of the 8th century, and the 8th year of the 770s decade. The denomination 777 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 778 (DCCLXXVIII) was a common year starting on Thursday of the Julian calendar, the 778th year of the Common Era (CE) and Anno Domini (AD) designations, the 778th year of the 1st millennium, the 78th year of the 8th century, and the 9th year of the 770s decade. The denomination 778 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 780 (DCCLXXX) was a leap year starting on Saturday of the Julian calendar, the 780th year of the Common Era (CE) and Anno Domini (AD) designations, the 780th year of the 1st millennium, the 80th year of the 8th century, and the 1st year of the 780s decade. The denomination 780 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 782 (DCCLXXXII) was a common year starting on Tuesday of the Julian calendar, the 782nd year of the Common Era (CE) and Anno Domini (AD) designations, the 782nd year of the 1st millennium, the 82nd year of the 8th century, and the 3rd year of the 780s decade. The denomination 782 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 783 (DCCLXXXIII) was a common year starting on Wednesday of the Julian calendar. The denomination 783 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 785 (DCCLXXXV) was a common year starting on Saturday of the Julian calendar. The article denomination 785 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. It is still used today in this manner.
Year 788 (DCCLXXXVIII) was a leap year starting on Tuesday of the Julian calendar, the 788th year of the Common Era (CE) and Anno Domini (AD) designations, the 788th year of the 1st millennium, the 88th year of the 8th century, and the 9th year of the 780s decade. The denomination 788 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 792 (DCCXCII) was a leap year starting on Sunday of the Julian calendar, the 792nd year of the Common Era (CE) and Anno Domini (AD) designations, the 792nd year of the 1st millennium, the 92nd year of the 8th century, and the 3rd year of the 790s decade. The denomination 792 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 797 (DCCXCVII) was a common year starting on Sunday of the Julian calendar. The denomination 797 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 798 (DCCXCVIII) was a common year starting on Monday of the Julian calendar, the 798th year of the Common Era (CE) and Anno Domini (AD) designations, the 798th year of the 1st millennium, the 98th year of the 8th century, and the 9th year of the 790s decade. The denomination 798 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.
700 (DCC) was a leap year starting on Thursday of the Julian calendar, the 700th year of the Common Era (CE) and Anno Domini (AD) designations, the 700th year of the 1st millennium, the 100th and last year of the 7th century, and the 1st year of the 700s decade. As of the start of 700, the Gregorian calendar was 3 days ahead of the Julian calendar, which was the dominant calendar of the time.
