1870 followed by 1871
1870 (MDCCCLXX) was a common year starting on Saturday of the Gregorian calendar and a common year starting on Thursday of the Julian calendar, the 1870th year of the Common Era (CE) and Anno Domini (AD) designations, the 870th  year of the 2nd millennium, the 70th  year of the 19th century, and the  1st   year of the 1870s decade. As of the start of 1870, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.