1837 followed by 1838
1837 (MDCCCXXXVII) was a common year starting on Sunday of the Gregorian calendar and a common year starting on Friday of the Julian calendar, the 1837th year of the Common Era (CE) and Anno Domini (AD) designations, the 837th  year of the 2nd millennium, the 37th  year of the 19th century, and the  8th   year of the 1830s decade. As of the start of 1837, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.