Temporal.PlainDateTime.prototype.day

The day accessor property of {{jsxref("Temporal.PlainDateTime")}} instances returns a positive integer representing the 1-based day index in the month of this date, which is the same day number you would see on a calendar. It is calendar-dependent.

The set accessor of day is undefined. You cannot change this property directly. Use the {{jsxref("Temporal/PlainDateTime/with", "with()")}} method to create a new Temporal.PlainDateTime object with the desired new value.

For general information and more examples, see {{jsxref("Temporal/PlainDate/day", "Temporal.PlainDate.prototype.day")}}.

Examples#

Using day#

const dt = Temporal.PlainDateTime.from("2021-07-01"); // ISO 8601 calendar
console.log(dt.day); // 1

Specifications#

{{Specifications}}

Browser compatibility#

{{Compat}}

See also#

• {{jsxref("Temporal.PlainDateTime")}}
• {{jsxref("Temporal/PlainDateTime/with", "Temporal.PlainDateTime.prototype.with()")}}
• {{jsxref("Temporal/PlainDateTime/add", "Temporal.PlainDateTime.prototype.add()")}}
• {{jsxref("Temporal/PlainDateTime/subtract", "Temporal.PlainDateTime.prototype.subtract()")}}
• {{jsxref("Temporal/PlainDateTime/year", "Temporal.PlainDateTime.prototype.year")}}
• {{jsxref("Temporal/PlainDateTime/month", "Temporal.PlainDateTime.prototype.month")}}
• {{jsxref("Temporal/PlainDateTime/daysInMonth", "Temporal.PlainDateTime.prototype.daysInMonth")}}
• {{jsxref("Temporal/PlainDateTime/dayOfWeek", "Temporal.PlainDateTime.prototype.dayOfWeek")}}
• {{jsxref("Temporal/PlainDateTime/dayOfYear", "Temporal.PlainDateTime.prototype.dayOfYear")}}
• {{jsxref("Temporal/PlainDate/day", "Temporal.PlainDate.prototype.day")}}