Get the exact system date and time as a `Temporal.Instant`. This method gets the current exact system time, without regard to calendar or time zone. This is a good way to get a timestamp for an event, for example. It works like the old-style JavaScript `Date.now()`, but with nanosecond precision instead of milliseconds. Note that a `Temporal.Instant` doesn't know about time zones. For the exact time in a specific time zone, use `Temporal.Now.zonedDateTimeISO` or `Temporal.Now.zonedDateTime`.

Type

() => Temporal.Instant