This is why dates are such an issue. A timestamp is the number of seconds or milliseconds or units like 1624938650 seconds from epoch UTC. What I posted above

This is why dates are such an issue. A timestamp is the number of seconds or milliseconds or units like 1624938650 seconds from epoch UTC. What I posted above are human parseable datetimes in ISO 8601. Each of them is a point in time that depending on the locale and tz fall on two separate dates but the most important aspect is that it doesn't matter whether I'm using them in my DB or on a user's machine in a different locale and tz. That's the point.