tradeday

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中文

tradeday 是一个可离线查询的 Go 交易日历库，用于判断指定日期是否为交易日。
它内置交易日数据，适合量化、交易系统、回测、行情采集和定时任务调度等场景。

当前仓库已支持两个市场，支持范围分别为：

• CNStock：2015-01-01 到 2026-12-31
• USStock：2015-01-01 到 2026-12-31

项目底层使用交易日位图来保存每年的交易日数据，具有极佳的查询效率

• 单个交易日查询实现O(1)效率
• 范围交易日查询实现O(n)效率。

特性

• 支持按市场创建交易日历
• 支持判断某一天是否为交易日
• 支持前一个交易日、后一个交易日、按偏移取交易日
• 支持闭区间交易日列表查询
• 交易日判断基于本地位图数据
• 支持周末、法定节假日和特殊休市日的真实交易日结果
• 人性化的 API 设计，适合直接嵌入 Go 项目
• 无需网络请求即可使用

安装

go get github.com/Knowckx/tradeday

快速开始

Date 是一个以 string 为底层类型的日期类型，因此可以直接传入形如 "2024-10-08" 的字符串字面量。

package main

import (
	"fmt"
	"log"

	"github.com/Knowckx/tradeday"
)

func main() {
	cal, err := tradeday.New(tradeday.CalendarID.CNStock)
	if err != nil {
		log.Fatal(err)
	}

	ok, err := cal.IsTradeDay("2024-10-08")
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println(ok)
}

核心概念

• Date
  • 对外统一使用的日期类型，固定格式为 2006-01-02
• Calendar
  • 某一个市场的交易日历实例
• CalendarID
  • 用于选择具体市场，目前包含 CNStock 和 USStock
• 交易日位图
  • 交易日历的底层实现，用户侧无感知。每个年份对应一份位图数据，bit=1 表示交易日，bit=0 表示非交易日

API 用法

创建日历

cal, err := tradeday.New(tradeday.CalendarID.USStock)
if err != nil {
	return
}

判断交易日

ok, err := cal.IsTradeDay("2024-10-08")
if err != nil {
	return
}
_ = ok

前后交易日

prev, err := cal.PrevTradeDay("2024-10-08")
next, err := cal.NextTradeDay("2024-10-08")
_ = prev
_ = next
_ = err

偏移交易日

// 返回"2024-10-08"之后的第 5 个有效交易日
day, err := cal.OffsetTradeDay("2024-10-08", 5)
if err != nil {
	return
}
_ = day

交易日区间

days, err := cal.ListTradeDays("2024-10-01", "2024-10-08")
if err != nil {
	return
}
_ = days

错误判断

import (
	"errors"

	"github.com/Knowckx/tradeday"
)

if err != nil {
	switch {
	case errors.Is(err, tradeday.ErrorInvalidDateFormat):
	case errors.Is(err, tradeday.ErrorDateOutOfRange):
	case errors.Is(err, tradeday.ErrorInvalidDateRange):
	case errors.Is(err, tradeday.ErrorInvalidOffset):
	case errors.Is(err, tradeday.ErrorUnsupportedCalendar):
	}
}

测试

go test ./...

限制

• 每年的12月末，当交易所发布了下一年的交易日历时，作者也会及时更新。此时需要开发者手动更新包依赖。

• 本项目不判断停牌、临时停牌或盘中交易状态

• 本项目不替代交易所官方公告，假如遇到特殊事件，请以交易所官方公告为准。

路线图

• 增加更多市场支持，比如香港交易所。
• 扩展更多年份数据
• 增加自动生成日历数据的工具
• 增加命令行工具

贡献

欢迎提交 issue、测试用例和交易日历数据修订。修改日历数据时请注明来源，避免引入不可追溯的差异。

License

MIT License. See LICENSE.

English

tradeday is an offline-capable Go trading-calendar library used to check whether a given date is a trading day.
It ships with built-in trading-day data and is suitable for quant systems, trading applications, backtesting, market-data collection, and scheduled jobs.

The repository currently supports two markets, with the following ranges:

• CNStock: 2015-01-01 through 2026-12-31
• USStock: 2015-01-01 through 2026-12-31

The project uses trading-day bitmaps to store each year's data and delivers excellent query efficiency

• Single-day trading queries are O(1)
• Range trading queries are O(n).

Features

• Support creating calendars by market
• Support checking whether a given day is a trading day
• Support getting the previous trading day, the next trading day, and an offset trading day
• Support listing trading days in an inclusive date range
• Trading-day checks are based on local bitmap data
• Support real trading-day results for weekends, exchange holidays, and special closures
• Human-friendly API design that is easy to embed in Go projects
• Usable without any network requests

Installation

go get github.com/Knowckx/tradeday

Quick Start

Date is a string-backed date type, so you can pass a string literal such as "2024-10-08" directly.

package main

import (
	"fmt"
	"log"

	"github.com/Knowckx/tradeday"
)

func main() {
	cal, err := tradeday.New(tradeday.CalendarID.CNStock)
	if err != nil {
		log.Fatal(err)
	}

	ok, err := cal.IsTradeDay("2024-10-08")
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println(ok)
}

Core Concepts

• Date
  • The public date type, with a fixed format of 2006-01-02
• Calendar
  • An instance of the trading calendar for a specific market
• CalendarID
  • Used to choose a specific market, currently including CNStock and USStock
• Trading-day bitmap
  • The underlying implementation of the trading calendar, transparent to users. Each year corresponds to a bitmap dataset; bit=1 means trading day and bit=0 means non-trading day

API Usage

Create a calendar

cal, err := tradeday.New(tradeday.CalendarID.USStock)
if err != nil {
	return
}

Check whether a trading day

ok, err := cal.IsTradeDay("2024-10-08")
if err != nil {
	return
}
_ = ok

Previous / next trading day

prev, err := cal.PrevTradeDay("2024-10-08")
next, err := cal.NextTradeDay("2024-10-08")
_ = prev
_ = next
_ = err

Offset by trading days

// Return the 5th valid trading day after "2024-10-08"
day, err := cal.OffsetTradeDay("2024-10-08", 5)
if err != nil {
	return
}
_ = day

Trading-day range

days, err := cal.ListTradeDays("2024-10-01", "2024-10-08")
if err != nil {
	return
}
_ = days

Error handling

import (
	"errors"

	"github.com/Knowckx/tradeday"
)

if err != nil {
	switch {
	case errors.Is(err, tradeday.ErrorInvalidDateFormat):
	case errors.Is(err, tradeday.ErrorDateOutOfRange):
	case errors.Is(err, tradeday.ErrorInvalidDateRange):
	case errors.Is(err, tradeday.ErrorInvalidOffset):
	case errors.Is(err, tradeday.ErrorUnsupportedCalendar):
	}
}

Testing

go test ./...

Limitations

• At the end of each year, when the exchange publishes the next year's trading calendar, the author will update it in time. Developers then need to update the package dependency manually.

• This project does not determine suspension, temporary suspension, or intraday trading status

• This project does not replace official exchange announcements; if special events occur, please follow the exchange's official notices

Roadmap

• Add more market support, such as the Hong Kong exchange.
• Extend the year coverage
• Add tooling for generating calendar data
• Add a command-line tool

Contributing

Issues, test cases, and calendar-data updates are welcome. When updating calendar data, please include the source so changes remain traceable.

License

MIT License. See LICENSE.