core
/
io.islandtime
/
YearMonth
/
firstDayOfYear
firstDayOfYear
(iosArm64, iosX64, jvm, macosX64, tvosArm64, tvosX64, watchosArm64, watchosX86)
val
firstDayOfYear
:
Int
The ordinal date corresponding to the first day of this year-month.