The word ‘where’ does not have a past tense form. ‘Where’ is an adverb used to indicate a place or location, and adverbs typically do not conjugate or change form based on tense like verbs do.
In contrast, verbs in English can change their form to indicate past, present, or future actions (e.g., ‘run’ becomes ‘ran’ in the past tense). However, since ‘where’ serves a different grammatical purpose, it remains unchanged regardless of the context.