Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The toPlainMonthDay() method of Temporal.PlainDate instances returns a new Temporal.PlainMonthDay object representing the monthCode and day of this date in the same calendar system.
Note that PlainMonthDay objects do not have a month component, because months with the same name can have different month indexes in different years due to leap months.