Twitter does not make the author's timezone public. I'm not sure about Youtube, but it's probably the same. When a tweet says "by end of today", the author meant it in the context of the city they live in, but that's unknown unless explicitly added.
We need a solution to this. One way is to allow specifying a timestamp explicitly, but default to end of day on the latest reasonable timezone (potentially -8 in Seattle?).
Twitter does not make the author's timezone public. I'm not sure about Youtube, but it's probably the same. When a tweet says "by end of today", the author meant it in the context of the city they live in, but that's unknown unless explicitly added.
We need a solution to this. One way is to allow specifying a timestamp explicitly, but default to end of day on the latest reasonable timezone (potentially -8 in Seattle?).