indian-date-utils-suratwala/index.js

Date utilities for Indian calendar such as formatted IST, holiday checking, and more.

import { format, parseISO, isSunday } from 'date-fns';

export const gazettedHolidays = [
  "2025-01-26", // Republic Day
  "2025-03-17", // Holi
  "2025-04-10", // Mahavir Jayanti
  "2025-04-18", // Good Friday
  "2025-05-01", // Maharashtra Day
  "2025-08-15", // Independence Day
  "2025-10-02", // Gandhi Jayanti
  "2025-10-20", // Diwali
  "2025-11-06", // Bhai Dooj
  "2025-12-25"  // Christmas
];

export const restrictedHolidays = [
  "2025-01-01", // New Year's Day
  "2025-01-06", // Guru Gobind Singh Jayanti
  "2025-02-14", // Vasant Panchami
  "2025-03-01", // Shivaji Jayanti
  "2025-03-08", // International Women's Day
  "2025-04-01", // Bank Closing
  "2025-05-09", // Rabindranath Tagore Jayanti
  "2025-07-06", // Rath Yatra
  "2025-08-19", // Parsi New Year
  "2025-09-23", // Anant Chaturdashi
  "2025-10-02", // Dussehra
  "2025-11-01", // Kannada Rajyotsava
  "2025-12-24"  // Christmas Eve
];

export function analyzeHolidays(holidays, title) {
  console.log(`\n${title} Holidays in 2025:`);
  holidays.forEach(dateStr => {
    const date = parseISO(dateStr);
    const day = format(date, 'EEEE');
    const note = isSunday(date) ? ' (Sunday)' : '';
    console.log(`• ${dateStr} (${day})${note}`);
  });

  const sundays = holidays.filter(d => isSunday(parseISO(d)));
  if (sundays.length) {
    console.log(`\n${title} Holidays on Sunday:`);
    sundays.forEach(d => {
      const day = format(parseISO(d), 'EEEE');
      console.log(`• ${d} (${day})`);
    });
  } else {
    console.log(`No ${title} holidays fall on Sunday.`);
  }
}