@yiliang114/trading-day

Quick start

import {
  getLastTradingDay,
  getTradingDays,
  isTradingDay,
  isTradingTime,
} from "@yiliang114/trading-day";

isTradingDay(new Date()); // true | false
getLastTradingDay("2024-05-02"); // "2024-04-30"
getTradingDays("2024-04-01", "2024-04-05"); // ["2024-04-01", "2024-04-02", ...]
isTradingTime("2024-04-19 09:45"); // true

Custom calendar

If you need to override the default Chinese mainland trading calendar (for example, to add extra trading days caused by weekend make-up shifts), configure a dedicated calendar:

import {
  configureTradingCalendar,
  getTradingCalendar,
} from "@yiliang114/trading-day";

configureTradingCalendar({
  workingDayOverrides: ["2024-02-18"], // Sunday make-up trading day
});

// Optional: keep a reference to use advanced APIs directly
const calendar = getTradingCalendar();
calendar.isTradingDay("2024-02-18"); // true