Queen Elizabeth about to overtake Queen Victoria's record
DID you know September 9 this year represents an extraordinary milestone.
It is the day on which Elizabeth II becomes the longest-reigning monarch in British history, the day on which she breaks the record held for more than a century by her great-great-grandmother Queen Victoria.
The official beginning of the reign of a British monarch is the moment of the death of the previous monarch (as long as clear succession is obvious and accepted).
For every British monarchical changeover of the last two centuries, therefore, there have been two monarchs on a single day.
On June 20, 1837 when William IV died, the monarchy immediately passed to Victoria who became Queen.
The date is not taken from the ceremonial coronation of the monarch, which generally occurs quite some time later.
Victoria, for example, was crowned at her coronation on June 28, 1838,
It was just over a year later she became queen.
Likewise, Queen Elizabeth II's coronation took place almost 16 months after she had become queen.
Taking into account the leap years during the two reigns the Palace have concluded that it is actually the evening of September 9th 2015 when Elizabeth II will become the longest serving monarch.