@multisystemsuite/timezone-engine-calendar

Regional calendar utilities with timezone-aware month grids and locale-first-day-of-week support.

What it is used for

• Calendar widgets in ERP, HRMS, and booking apps
• Regional week layouts (US Sunday-start vs UK Monday-start)
• Timezone-aware month/day generation
• Locale-specific month and weekday labels

Install

npm install @multisystemsuite/timezone-engine-calendar

Usage

import {
  generateCalendarMonth,
  getWeekDayNames,
  getMonthName,
  getRegionalFirstDayOfWeek,
} from "@multisystemsuite/timezone-engine-calendar";

const calendar = generateCalendarMonth(2026, 5, {
  timezone: "Asia/Kolkata",
  locale: "en-IN",
});

calendar.days.forEach((day) => {
  console.log(day.formatted, day.isToday, day.isCurrentMonth);
});

console.log(getWeekDayNames("en-GB", "short")); // Mon, Tue, ...
console.log(getRegionalFirstDayOfWeek("en-GB")); // 1 (Monday)

Key exports

| Export | Purpose | | ----------------------------- | ----------------------------- | | generateCalendarMonth() | Full month grid with timezone | | getWeekDayNames() | Localised weekday labels | | getMonthName() | Localised month name | | getRegionalFirstDayOfWeek() | 0=Sun, 1=Mon, etc. |

Related packages

• @multisystemsuite/timezone-engine-core — date formatting
• @multisystemsuite/timezone-engine-world-data — locale metadata

Keywords

timezone, calendar, regional, locale, week-start, typescript

License

MIT