Britain celebrates a Diamond Jubilee. Two noteworthy observations from this morning's events: the National Emblem march rendered in that British march tempo, and the lead plane in the fly-past sporting D-Day stripes on the wings.
Her Majesty requested the band to play The Star Spangled Banner at the 12 September 2001 Changing of the Guard.
The last Queen to view a Diamond Jubilee was Victoria, and the Transit of Venus occurred during her reign. John Phillip Sousa wrote a march for that occasion. Another Transit of Venus coincides with today's Jubilee, although it will not be visible from Britain (and not because of the clouds).
On this day, the Boston and Lowell Railroad was chartered in 1830. That's the first component of what became the Boston and Maine.