1791 (MDCCXCI) was a common year starting on Saturday of the Gregorian calendar and a common year starting on Wednesday of the Julian calendar, the 1791st year of the Common Era (CE) and Anno Domini (AD) designations, the 791st year of the 2nd millennium, the 91st year of the 18th century, and the 2nd year of the 1790s decade. As of the start of 1791, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.
1818 (MDCCCXVIII) was a common year starting on Thursday of the Gregorian calendar and a common year starting on Tuesday of the Julian calendar, the 1818th year of the Common Era (CE) and Anno Domini (AD) designations, the 818th year of the 2nd millennium, the 18th year of the 19th century, and the 9th year of the 1810s decade. As of the start of 1818, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.
1901 (MCMI) was a common year starting on Tuesday of the Gregorian calendar and a common year starting on Monday of the Julian calendar, the 1901st year of the Common Era (CE) and Anno Domini (AD) designations, the 901st year of the 2nd millennium, the 1st year of the 20th century, and the 2nd year of the 1900s decade. As of the start of 1901, the Gregorian calendar was 13 days ahead of the Julian calendar, which remained in localized use until 1923.
The 1780s was a decade of the Gregorian calendar that began on January 1, 1780, and ended on December 31, 1789. A period widely considered as transitional between the Age of Enlightenment and the Industrial Revolution, the 1780s saw the inception of modern philosophy. With the rise on astronomical, technological, and political discoveries and innovations such as Uranus, cast iron on structures, republicanism and hot air balloons, the 1780s kick-started a rapid global industrialization movement, leaving behind the world's predominantly agrarian customs in the past.
1857 (MDCCCLVII) was a common year starting on Thursday of the Gregorian calendar and a common year starting on Tuesday of the Julian calendar, the 1857th year of the Common Era (CE) and Anno Domini (AD) designations, the 857th year of the 2nd millennium, the 57th year of the 19th century, and the 8th year of the 1850s decade. As of the start of 1857, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.
1860 (MDCCCLX) was a leap year starting on Sunday of the Gregorian calendar and a leap year starting on Friday of the Julian calendar, the 1860th year of the Common Era (CE) and Anno Domini (AD) designations, the 860th year of the 2nd millennium, the 60th year of the 19th century, and the 1st year of the 1860s decade. As of the start of 1860, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.
1839 (MDCCCXXXIX) was a common year starting on Tuesday of the Gregorian calendar and a common year starting on Sunday of the Julian calendar, the 1839th year of the Common Era (CE) and Anno Domini (AD) designations, the 839th year of the 2nd millennium, the 39th year of the 19th century, and the 10th and last year of the 1830s decade. As of the start of 1839, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.
1792 (MDCCXCII) was a leap year starting on Sunday of the Gregorian calendar and a leap year starting on Thursday of the Julian calendar, the 1792nd year of the Common Era (CE) and Anno Domini (AD) designations, the 792nd year of the 2nd millennium, the 92nd year of the 18th century, and the 3rd year of the 1790s decade. As of the start of 1792, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.
1842 (MDCCCXLII) was a common year starting on Saturday of the Gregorian calendar and a common year starting on Thursday of the Julian calendar, the 1842nd year of the Common Era (CE) and Anno Domini (AD) designations, the 842nd year of the 2nd millennium, the 42nd year of the 19th century, and the 3rd year of the 1840s decade. As of the start of 1842, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.
1858 (MDCCCLVIII) was a common year starting on Friday of the Gregorian calendar and a common year starting on Wednesday of the Julian calendar, the 1858th year of the Common Era (CE) and Anno Domini (AD) designations, the 858th year of the 2nd millennium, the 58th year of the 19th century, and the 9th year of the 1850s decade. As of the start of 1858, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.
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.
1831 (MDCCCXXXI) was a common year starting on Saturday of the Gregorian calendar and a common year starting on Thursday of the Julian calendar, the 1831st year of the Common Era (CE) and Anno Domini (AD) designations, the 831st year of the 2nd millennium, the 31st year of the 19th century, and the 2nd year of the 1830s decade. As of the start of 1831, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.
1804 (MDCCCIV) was a leap year starting on Sunday of the Gregorian calendar and a leap year starting on Friday of the Julian calendar, the 1804th year of the Common Era (CE) and Anno Domini (AD) designations, the 804th year of the 2nd millennium, the 4th year of the 19th century, and the 5th year of the 1800s decade. As of the start of 1804, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.
1856 (MDCCCLVI) was a leap year starting on Tuesday of the Gregorian calendar and a leap year starting on Sunday of the Julian calendar, the 1856th year of the Common Era (CE) and Anno Domini (AD) designations, the 856th year of the 2nd millennium, the 56th year of the 19th century, and the 7th year of the 1850s decade. As of the start of 1856, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.
1799 (MDCCXCIX) was a common year starting on Tuesday of the Gregorian calendar and a common year starting on Saturday of the Julian calendar, the 1799th year of the Common Era (CE) and Anno Domini (AD) designations, the 799th year of the 2nd millennium, the 99th year of the 18th century, and the 10th and last year of the 1790s decade. As of the start of 1799, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.
1783 (MDCCLXXXIII) was a common year starting on Wednesday of the Gregorian calendar and a common year starting on Sunday of the Julian calendar, the 1783rd year of the Common Era (CE) and Anno Domini (AD) designations, the 783rd year of the 2nd millennium, the 83rd year of the 18th century, and the 4th year of the 1780s decade. As of the start of 1783, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.
1785 (MDCCLXXXV) was a common year starting on Saturday of the Gregorian calendar and a common year starting on Wednesday of the Julian calendar, the 1785th year of the Common Era (CE) and Anno Domini (AD) designations, the 785th year of the 2nd millennium, the 85th year of the 18th century, and the 6th year of the 1780s decade. As of the start of 1785, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.
1778 (MDCCLXXVIII) was a common year starting on Thursday of the Gregorian calendar and a common year starting on Monday of the Julian calendar, the 1778th year of the Common Era (CE) and Anno Domini (AD) designations, the 778th year of the 2nd millennium, the 78th year of the 18th century, and the 9th year of the 1770s decade. As of the start of 1778, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.
1775 (MDCCLXXV) was a common year starting on Sunday of the Gregorian calendar and a common year starting on Thursday of the Julian calendar, the 1775th year of the Common Era (CE) and Anno Domini (AD) designations, the 775th year of the 2nd millennium, the 75th year of the 18th century, and the 6th year of the 1770s decade. As of the start of 1775, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.
1776 (MDCCLXXVI) was a leap year starting on Monday of the Gregorian calendar and a leap year starting on Friday of the Julian calendar, the 1776th year of the Common Era (CE) and Anno Domini (AD) designations, the 776th year of the 2nd millennium, the 76th year of the 18th century, and the 7th year of the 1770s decade. As of the start of 1776, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.
