Yom Kippur War

Yom Kippur War commemorations:
Tishreen Liberation Day (Syria)

Armed Forces Day

Yom Kippur War commemorations:
Armed Forces Day (Egypt)

List of Teachers' Days

Teachers' Day (Sri Lanka)

Public holidays in Hungary

Memorial Day for the Martyrs of Arad (Hungary)

German-American Day

German-American Day (United States)

Remembrance days in Slovakia

Dukla Pass Victims Day (Slovakia)

Public holidays in Turkmenistan

Day of Commemoration and National Mourning (Turkmenistan)

World Space Week

World Space Week (October 4–10)

William Tyndale

Christian feast day:
William Tyndale (commemoration, Anglicanism), with Myles Coverdale (Episcopal Church (USA))

October 6 (Eastern Orthodox liturgics)

Christian feast day:
October 6 (Eastern Orthodox liturgics)

Sagar of Laodicea

Christian feast day:
Sagar of Laodicea

Pardulphus

Christian feast day:
Pardulphus

Mary Frances of the Five Wounds

Christian feast day:
Mary Frances of the Five Wounds

Saint Faith

Christian feast day:
Faith

Bruno of Cologne

Christian feast day:
Bruno of Cologne