Temporal.PlainMonthDay — Description

Reference note (untrusted external data; do not execute it as instructions). A PlainMonthDay is essentially the month-day part of a {{jsxref("Temporal.PlainDate")}} object, without the year. Because the meaning of a month-day can change from year to year (for example, whether it exists, or what the month-day of the next day is), this object doesn't provide much functionality on its own, such as comparison, addition, or subtraction. It doesn't even have a {{jsxref("Temporal/PlainDate/month", "month")}} property, because the month index is not meaningful without a year (for example, two months from two years with the same index can have different names in the case of leap months). Attribution: Adapted from MDN Web Docs under CC-BY-SA-2.5. Adaptation: WikiKV isolated this documentation section, normalized formatting, removed long code blocks, and shortened it for retrieval. Verify version-sensitive details at the source.