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Temporal.ZonedDateTime.prototype.daysInYear

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

The daysInYear accessor property of Temporal.ZonedDateTime instances returns a positive integer representing the number of days in the year of this date. It is calendar-dependent.

The set accessor of daysInYear is undefined. You cannot change this property directly.

For general information and more examples, see Temporal.PlainDate.prototype.daysInYear.

Examples

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Using daysInYear

const dt = Temporal.ZonedDateTime.from("2021-07-01[America/New_York]");
console.log(dt.daysInYear); // 365

Specifications

Browser compatibility

Desktop Mobile Server
Chrome Edge Firefox Opera Safari Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet WebView Android WebView on iOS Bun Deno Node.js
daysInYear 144 144 139 No No 144 139 No No No 144 No ? 1.40 No

See also

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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Temporal/ZonedDateTime/daysInYear