On this day... January 7:

On this day...

January 7: Christmas (Julian calendar); Victory Day in Cambodia; Flag Day in Italy 1558 – Francis, Duke of Guise (pictured), retook Calais, England's last continental possession, for France. 1610 – Italian astronomer Galileo Galilei made his first observation of the four Galilean moons through his telescope: Ganymede, Callisto, Io and Europa, although he was not able to distinguish the latter two until the following day. 1797 – The first official Italian tricolour was adopted by the government of the Cispadane Republic. 1979 – The Vietnam People's Army captured the Cambodian capital cityPhnom Penh, deposing Pol Pot and the Khmer Rouge, which marked the end of large-scale fighting in the Cambodian–Vietnamese War. 1993 – The Fourth Republic of Ghana was inaugurated with Jerry Rawlings as its president.