time-slip
/ˈtʌɪmslɪp/noun
(The occurrence of) a dislocation in the flow of time, in imagination or (especially) as represented in fiction, film, etc., by means of which travel between different periods of time is supposed to be possible; (also) the bringing together of different points in time, as a result of which events at one period may be perceived or experienced at another.
Origin
1940s. From time + slip.