date.daysInMonth()

The daysInMonth method returns the total number of days present in the active month of the current NepaliDate instance, or for an explicitly provided year and month combination. Because Bikram Sambat month durations vary from 29 to 32 days depending on astronomical solar calculations, this method provides accurate month lengths.

ImportCopy Anchor Link

import { NepaliDate } from "nepali-date-library";

SignatureCopy Anchor Link

daysInMonth(year?: number, month?: number): number;

ParametersCopy Anchor Link

Return ValueCopy Anchor Link

• Type: number
• The number of days in the specified month (typically between 29 and 32 days).

ExceptionsCopy Anchor Link

Throws an Error if month is explicitly provided and is less than 0 or greater than 11:

"Invalid month index, must be between 0-11"

ExamplesCopy Anchor Link

Querying the Current Instance MonthCopy Anchor Link

import { NepaliDate } from "nepali-date-library";

// 2081 Baisakh
const date = new NepaliDate(2081, 0, 15);
console.log(date.daysInMonth()); // 31

Querying an Arbitrary Year and MonthCopy Anchor Link

import { NepaliDate } from "nepali-date-library";

const date = new NepaliDate();

// Querying Jestha 2081 (month index 1)
const jesthaDays = date.daysInMonth(2081, 1);
console.log(jesthaDays); // 32

// Querying Chaitra 2080 (month index 11)
const chaitraDays = date.daysInMonth(2080, 11);
console.log(chaitraDays); // 30

RelatedCopy Anchor Link

• date.getWeeksInMonth(): Compute number of calendar week rows.
• NepaliDate.getCalendarDays(): Generate month grid with padding.