40 week of year 1866

Sunday, September 30, 1866 — Saturday, October 6, 1866

• Sunday, September 30, 1866
• Monday, October 1, 1866
• Tuesday, October 2, 1866
• Wednesday, October 3, 1866
• Thursday, October 4, 1866
• Friday, October 5, 1866
• Saturday, October 6, 1866