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kotlinlang

How can i convert two java.time.LocalDateTime instances to kotlin.time.Duration?
i can’t find stdlib converting functions like java.time.Duration.between(t1, t2) for represent two time’s diffrences.

That's because the difference is between two _instants in time_, not two `LocalDateTime` instances. Any conversion on local date time is ambiguous because of timezones and daylight savings time. You must instead do this conversion on `Instant`.

```val tz = TimeZone.UTC
val dt1 = LocalDateTime(...).toInstant(tz)
val dt2 = LocalDateTime(...).toInstant(tz)

val duration = dt1 - dt2```

ah thanks! reveal TimeZone is important things! thank you