The Queen's 90th birthday is on April 21, and while this will not be the main focus of the celebrations, there will still be an opportunity to see the Queen for hardy royal-watchers.
Her Majesty will be at Windsor Castle when her birthday comes around, and Buckingham Palace has announced a series of engagements in the area on the 20th and 21st.
On April 20, the Queen will visit the Royal Mail Windsor delivery office to mark the 500th anniversary of the postal service, and will also open a new bandstand at Alexandra Gardens in Windsor.
On April 21, the Queen will unveil a plaque marking the start of a four-mile Queen's Walkway at the foot of Castle Hill in Windsor. It connects 63 points of interest in the town, commemorating the Queen's achievement in becoming our longest-reigning monarch after more than 63 years in 2015.
The Queen and the Duke of Edinburgh will then go on a walkabout to greet members of the public, but you'll need to turn up early to bag the best places. Serious royal fans may well camp out overnight.
Then in the evening the Queen, accompanied by the Duke of Edinburgh, the Prince of Wales and the Duchess of Cornwall, will light the first in a chain of 1,000 beacons across the country and worldwide that will celebrate her birthday.
She will be joined by members of the Royal family including the Duke and Duchess of Cambridge for a private celebration at Windsor Castle in the evening.