1801 (MDCCCI) was a common year starting on Thursday of the Gregorian calendar and a common year starting on Tuesday of the Julian calendar, the 1801st year of the Common Era (CE) and Anno Domini (AD) designations, the 801st year of the 2nd millennium, the 1st year of the 19th century, and the 2nd year of the 1800s decade. As of the start of 1801, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.
1707 (MDCCVII) was a common year starting on Saturday of the Gregorian calendar and a common year starting on Wednesday of the Julian calendar, the 1707th year of the Common Era (CE) and Anno Domini (AD) designations, the 707th year of the 2nd millennium, the 7th year of the 18th century, and the 8th year of the 1700s decade. As of the start of 1707, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.
1735 (MDCCXXXV) was a common year starting on Saturday of the Gregorian calendar and a common year starting on Wednesday of the Julian calendar, the 1735th year of the Common Era (CE) and Anno Domini (AD) designations, the 735th year of the 2nd millennium, the 35th year of the 18th century, and the 6th year of the 1730s decade. As of the start of 1735, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.
1688 (MDCLXXXVIII) was a leap year starting on Thursday of the Gregorian calendar and a leap year starting on Sunday of the Julian calendar, the 1688th year of the Common Era (CE) and Anno Domini (AD) designations, the 688th year of the 2nd millennium, the 88th year of the 17th century, and the 9th year of the 1680s decade. As of the start of 1688, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.
1728 (MDCCXXVIII) was a leap year starting on Thursday of the Gregorian calendar and a leap year starting on Monday of the Julian calendar, the 1728th year of the Common Era (CE) and Anno Domini (AD) designations, the 728th year of the 2nd millennium, the 28th year of the 18th century, and the 9th year of the 1720s decade. As of the start of 1728, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.
1644 (MDCXLIV) was a leap year starting on Friday of the Gregorian calendar and a leap year starting on Monday of the Julian calendar, the 1644th year of the Common Era (CE) and Anno Domini (AD) designations, the 644th year of the 2nd millennium, the 44th year of the 17th century, and the 5th year of the 1640s decade. As of the start of 1644, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.
1582 (MDLXXXII) was a common year starting on Monday of the Julian calendar, and a common year starting on Friday of the Proleptic Gregorian calendar. However, this year also saw the beginning of the Gregorian Calendar switch, when the Papal bull known as Inter gravissimas introduced the Gregorian calendar, adopted by Spain, Portugal, the Polish–Lithuanian Commonwealth and most of present-day Italy from the start. In these countries, the year continued as normal until Thursday, October 4. However, the next day became Friday, October 15, in those countries. Other countries continued using the Julian calendar, switching calendars in later years, and the complete conversion of the Gregorian calendar was not entirely done until 1929.
1800 (MDCCC) was an exceptional common year starting on Wednesday of the Gregorian calendar and a leap year starting on Sunday of the Julian calendar, the 1800th year of the Common Era (CE) and Anno Domini (AD) designations, the 800th year of the 2nd millennium, the 100th and last year of the 18th century, and the 1st year of the 1800s decade. As of the start of 1800, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.
1593 (MDXCIII) was a common year starting on Fridayof the Gregorian calendar and a common year starting on Monday of the Julian calendar. As of the start of 1593, the Gregorian calendar was 10 days ahead of the Julian calendar. Bara Tiddies.
1602 (MDCII) was a common year starting on Tuesday of the Gregorian calendar and a common year starting on Friday of the Julian calendar. As of the start of 1602, the Gregorian calendar was 10 days ahead of the Julian calendar.
1643 (MDCXLIII) was a common year starting on Thursday of the Gregorian calendar and a common year starting on Sunday of the Julian calendar, the 1643rd year of the Common Era (CE) and Anno Domini (AD) designations, the 643rd year of the 2nd millennium, the 43rd year of the 17th century, and the 4th year of the 1640s decade. As of the start of 1643, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.
1733 (MDCCXXXIII) was a common year starting on Thursday of the Gregorian calendar and a common year starting on Monday of the Julian calendar, the 1733rd year of the Common Era (CE) and Anno Domini (AD) designations, the 733rd year of the 2nd millennium, the 33rd year of the 18th century, and the 4th year of the 1730s decade. As of the start of 1733, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.
1722 (MDCCXXII) was a common year starting on Thursday of the Gregorian calendar and a common year starting on Monday of the Julian calendar, the 1722nd year of the Common Era (CE) and Anno Domini (AD) designations, the 722nd year of the 2nd millennium, the 22nd year of the 18th century, and the 3rd year of the 1720s decade. As of the start of 1722, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.
1659 (MDCLIX) was a common year starting on Wednesday of the Gregorian calendar and a common year starting on Saturday of the Julian calendar, the 1659th year of the Common Era (CE) and Anno Domini (AD) designations, the 659th year of the 2nd millennium, the 59th year of the 17th century, and the 10th and last year of the 1650s decade. As of the start of 1659, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.
1708 (MDCCVIII) was a leap year starting on Sunday of the Gregorian calendar and a leap year starting on Thursday of the Julian calendar, the 1708th year of the Common Era (CE) and Anno Domini (AD) designations, the 708th year of the 2nd millennium, the 8th year of the 18th century, and the 9th year of the 1700s decade. As of the start of 1708, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.
1701 (MDCCI) was a common year starting on Saturday of the Gregorian calendar and a common year starting on Wednesday of the Julian calendar, the 1701st year of the Common Era (CE) and Anno Domini (AD) designations, the 701st year of the 2nd millennium, the 1st year of the 18th century, and the 2nd year of the 1700s decade. As of the start of 1701, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.
1693 (MDCXCIII) was a common year starting on Thursday of the Gregorian calendar and a common year starting on Sunday of the Julian calendar, the 1693rd year of the Common Era (CE) and Anno Domini (AD) designations, the 693rd year of the 2nd millennium, the 93rd year of the 17th century, and the 4th year of the 1690s decade. As of the start of 1693, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.
1681 (MDCLXXXI) was a common year starting on Wednesday of the Gregorian calendar and a common year starting on Saturday of the Julian calendar, the 1681st year of the Common Era (CE) and Anno Domini (AD) designations, the 681st year of the 2nd millennium, the 81st year of the 17th century, and the 2nd year of the 1680s decade. As of the start of 1681, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.
1674 (MDCLXXIV) was a common year starting on Monday of the Gregorian calendar and a common year starting on Thursday of the Julian calendar, the 1674th year of the Common Era (CE) and Anno Domini (AD) designations, the 674th year of the 2nd millennium, the 74th year of the 17th century, and the 5th year of the 1670s decade. As of the start of 1674, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.
The year 1741 in science and technology involved some significant events.
