from
Returns an Instant that is the epochSeconds number of seconds from the epoch instant 1970-01-01T00:00:00Z and the nanosecondAdjustment number of nanoseconds from the whole second.
The return value is clamped to the platform-specific boundaries for Instant if the result exceeds them. In any case, it is guaranteed that instants between DISTANT_PAST and DISTANT_FUTURE can be represented.
fromEpochMilliseconds is a similar function for when input data only has millisecond precision.
See also
Samples
import kotlinx.datetime.*
import kotlinx.datetime.format.*
import kotlin.random.*
import kotlin.test.*
import kotlin.time.Duration.Companion.hours
fun main() {
//sampleStart
// Constructing an Instant from the number of seconds and nanoseconds since the Unix epoch
check(Instant.fromEpochSeconds(epochSeconds = 0) == Instant.parse("1970-01-01T00:00:00Z"))
check(Instant.fromEpochSeconds(epochSeconds = 1_000_001_234, nanosecondAdjustment = -1_234_000_000_001)
== Instant.parse("2001-09-09T01:46:39.999999999Z"))
//sampleEnd
}Returns an Instant that is the epochSeconds number of seconds from the epoch instant 1970-01-01T00:00:00Z and the nanosecondAdjustment number of nanoseconds from the whole second.
The return value is clamped to the platform-specific boundaries for Instant if the result exceeds them. In any case, it is guaranteed that instants between DISTANT_PAST and DISTANT_FUTURE can be represented.
fromEpochMilliseconds is a similar function for when input data only has millisecond precision.
See also
Samples
import kotlinx.datetime.*
import kotlinx.datetime.format.*
import kotlin.random.*
import kotlin.test.*
import kotlin.time.Duration.Companion.hours
fun main() {
//sampleStart
// Constructing an Instant from the number of seconds and nanoseconds since the Unix epoch
check(Instant.fromEpochSeconds(epochSeconds = 0) == Instant.parse("1970-01-01T00:00:00Z"))
check(Instant.fromEpochSeconds(epochSeconds = 1_000_000_000, nanosecondAdjustment = -1) == Instant.parse("2001-09-09T01:46:39.999999999Z"))
//sampleEnd
}