Moondial (1988) DVD

Moondial is a British television six-part serial made for children by the BBC and transmitted in 1988, with a repeat in 1990. It was written by Helen Cresswell, who also wrote the novel on which the series was based.
The story deals with a young girl, Minty (Siri Neal), staying with her aunt after her mother is injured in a car accident. Minty spends much of her time wandering around the grounds of a nearby mansion, and is drawn to a moondial that enables her to travel back in time, where she becomes involved with two children, Tom (Tony Sands), who lives in the Victorian era, and Sarah (Helena Avellano), who seems to live in "the previous century" to that, and must save them from their own unhappy lives.