Year 1804 (MDCCCIV) was a leap year starting on Sunday (link will display the full calendar) of the Gregorian calendar and a leap year starting on Friday of the 12-day slower Julian calendar.
Year 1804 (MDCCCIV) was a leap year starting on Sunday (link will display the full calendar) of the Gregorian calendar and a leap year starting on Friday of the 12-day slower Julian calendar.