I was referring to past/future in the text. Deixis is about how words and phrases like “this”, “that”, “here”, &c. are contextualised. Your example is unrelated

I was referring to past/future in the text. Deixis is about how words and phrases like “this”, “that”, “here”, &c. are contextualised. Your example is unrelated to discourse deixis because it’s not referring to a piece of the surrounding discourse. We use different forms of deixis and spatial metaphors for time, like “the end is near” or “the past is behind us”—in some languages, the past is in front of you (mnemonic: you can see it) while the future is behind (you can’t).