What’s striking about this is that it means that any notion of right now we might be tempted to hold onto—despite the fact that it is fleeting, and a construction of the mind—only exists for the others living on our planet. We are tied together not only by our physical location, but by our now. So whatever right now is, 1/10 of a second, or 3 seconds, or nothing at all—we’re all in now together.
https://www.vice.com/en_us/article/qjd4yd/how-long-is-right-now