kotlin-stdlib / kotlin.time / hours hours Common JVM JS Native 1.3 @ExperimentalTime @DeprecatedSinceKotlin ( "1.5" , "1.8" , "1.9" ) val Int . hours : Duration (source) Deprecated: Use 'Int.hours' extension property from Duration.Companion instead. Returns a Duration equal to this Int number of hours. Common JVM JS Native 1.3 @ExperimentalTime @DeprecatedSinceKotlin ( "1.5" , "1.8" , "1.9" ) val Long . hours : Duration (source) Deprecated: Use 'Long.hours' extension property from Duration.Companion instead. Returns a Duration equal to this Long number of hours. Common JVM JS Native 1.3 @ExperimentalTime @DeprecatedSinceKotlin ( "1.5" , "1.8" , "1.9" ) val Double . hours : Duration (source) Deprecated: Use 'Double.hours' extension property from Duration.Companion instead. Returns a Duration equal to this Double number of hours. Exceptions IllegalArgumentException - if this Double value is NaN .