The 86-year-old monarch will be joined by Prince Philip at a service at Westminster Abbey, followed by a reception at Marlborough House, central London, Buckingham Palace said.
There will be further engagements in London on Wednesday and Thursday, it said.
She was hospitalised overnight on Sunday for treatment of gastroenteritis and left the hospital on Monday. It was her first hospitalisation in 10 years.
In 2002, she was treated at the same hospital for a minor knee operation and had minor, non-cancerous lesions removed from her face.
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