A Timeless Christmas (2020) on Netflix

Plot summary

In Cutter Springs, New York, on December 18th, 1903, the inventor Charles Whitley argues with his fiancée Eliza Parker, who complains that he lives for the future and leaves her behind in the present. His housekeeper Rosie considers the two mismatched. Charles has bought Eliza an antique Christmas clock, which is said to help its owner find true love when it is wound on a Christmas moon. While he works on the clock he loses consciousness, and he comes to in a crowded mansion where strangers who look like Eliza, Rosie and his butler Fredericks know him only from a portrait in the front hall. The year is 2020; the house is the Whitley Museum, and its curator, Megan Turner, wrote her dissertation on his life.