# exchange_calendars

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A Python library for defining and querying calendars for security exchanges.

Calendars for more than [50 exchanges](#Calendars) available out-the-box! If you still can't find the calendar you're looking for, [create a new one](#How-can-I-create-a-new-calendar)!

## Installation

```bash
$ pip install exchange_calendars
```

## Quick Start

```python
import exchange_calendars as xcals
```

Get a list of available calendars:

```python
>>> xcals.get_calendar_names(include_aliases=False)[5:10]
['CMES', 'IEPA', 'XAMS', 'XASX', 'XBKK']
```

Get a calendar:

```python
>>> xnys = xcals.get_calendar("XNYS")  # New York Stock Exchange
>>> xhkg = xcals.get_calendar("XHKG")  # Hong Kong Stock Exchange
```
Query the schedule:

```python
>>> xhkg.schedule.loc["2021-12-29":"2022-01-04"]
```


                  open       break_start       break_end       close    

           2021-12-29       2021-12-29 01:30:00+00:00       2021-12-29 04:00:00+00:00       2021-12-29 05:00:00+00:00       2021-12-29 08:00:00+00:00    
           2021-12-30       2021-12-30 01:30:00+00:00       2021-12-30 04:00:00+00:00       2021-12-30 05:00:00+00:00       2021-12-30 08:00:00+00:00    
           2021-12-31       2021-12-31 01:30:00+00:00       NaT       NaT       2021-12-31 04:00:00+00:00    
           2022-01-03       2022-01-03 01:30:00+00:00       2022-01-03 04:00:00+00:00       2022-01-03 05:00:00+00:00       2022-01-03 08:00:00+00:00    
           2022-01-04       2022-01-04 01:30:00+00:00       2022-01-04 04:00:00+00:00       2022-01-04 05:00:00+00:00       2022-01-04 08:00:00+00:00    

### Working with **sessions**
```python
>>> xnys.is_session("2022-01-01")
False

>>> xnys.sessions_in_range("2022-01-01", "2022-01-11")
DatetimeIndex(['2022-01-03', '2022-01-04', '2022-01-05', '2022-01-06',
               '2022-01-07', '2022-01-10', '2022-01-11'],
              dtype='datetime64[ns]', freq='C')

>>> xnys.sessions_window("2022-01-03", 7)
DatetimeIndex(['2022-01-03', '2022-01-04', '2022-01-05', '2022-01-06',
               '2022-01-07', '2022-01-10', '2022-01-11'],
              dtype='datetime64[ns]', freq='C')

>>> xnys.date_to_session("2022-01-01", direction="next")
Timestamp('2022-01-03 00:00:00', freq='C')

>>> xnys.previous_session("2022-01-11")
Timestamp('2022-01-10 00:00:00', freq='C')

>>> xhkg.trading_index(
...     "2021-12-30", "2021-12-31", period="90min", force=True
... )
IntervalIndex([[2021-12-30 01:30:00, 2021-12-30 03:00:00), [2021-12-30 03:00:00, 2021-12-30 04:00:00), [2021-12-30 05:00:00, 2021-12-30 06:30:00), [2021-12-30 06:30:00, 2021-12-30 08:00:00), [2021-12-31 01:30:00, 2021-12-31 03:00:00), [2021-12-31 03:00:00, 2021-12-31 04:00:00)], dtype='interval[datetime64[ns, UTC], left]')
```
See the [sessions tutorial](docs/tutorials/sessions.ipynb) for a deeper dive into sessions.

### Working with **minutes**
```python
>>> xhkg.session_minutes("2022-01-03")
DatetimeIndex(['2022-01-03 01:30:00+00:00', '2022-01-03 01:31:00+00:00',
               '2022-01-03 01:32:00+00:00', '2022-01-03 01:33:00+00:00',
               '2022-01-03 01:34:00+00:00', '2022-01-03 01:35:00+00:00',
               '2022-01-03 01:36:00+00:00', '2022-01-03 01:37:00+00:00',
               '2022-01-03 01:38:00+00:00', '2022-01-03 01:39:00+00:00',
               ...
               '2022-01-03 07:50:00+00:00', '2022-01-03 07:51:00+00:00',
               '2022-01-03 07:52:00+00:00', '2022-01-03 07:53:00+00:00',
               '2022-01-03 07:54:00+00:00', '2022-01-03 07:55:00+00:00',
               '2022-01-03 07:56:00+00:00', '2022-01-03 07:57:00+00:00',
               '2022-01-03 07:58:00+00:00', '2022-01-03 07:59:00+00:00'],
              dtype='datetime64[ns, UTC]', length=330, freq=None)

>>> mins = [ "2022-01-03 " + tm for tm in ["01:29", "01:30", "04:20", "07:59", "08:00"] ]
>>> [ xhkg.is_trading_minute(minute) for minute in mins ]
[False, True, False, True, False]  # by default minutes are closed on the left side

>>> xhkg.is_break_minute("2022-01-03 04:20")
True

>>> xhkg.previous_close("2022-01-03 08:10")
Timestamp('2022-01-03 08:00:00+0000', tz='UTC')

>>> xhkg.previous_minute("2022-01-03 08:10")
Timestamp('2022-01-03 07:59:00+0000', tz='UTC')
```
Check out the [minutes tutorial](docs/tutorials/minutes.ipynb) for a deeper dive that includes an explanation of the concept of 'minutes' and how the "side" option determines which minutes are treated as trading minutes.

## Tutorials
* [sessions.ipynb](docs/tutorials/sessions.ipynb) - all things [sessions](#Working-with-sessions).
* [minutes.ipynb](docs/tutorials/minutes.ipynb) - all things [minutes](#Working-with-minutes). Don't miss this one!
* [calendar_properties.ipynb](docs/tutorials/calendar_properties.ipynb) - calendar constrution and a walk through the schedule and all other calendar properties.
* [calendar_methods.ipynb](docs/tutorials/calendar_methods.ipynb) - a walk through all the methods available to interrogate a calendar.
* [trading_index.ipynb](docs/tutorials/trading_index.ipynb) - a method that warrants a tutorial all of its own.

Hopefully you'll find that `exchange_calendars` has the method you need to get the information you want. If it doesn't, either [PR](https://github.com/gerrymanoim/exchange_calendars/pulls) it or [raise an issue](https://github.com/gerrymanoim/exchange_calendars/issues) and let us know!

## Command Line Usage
Print a unix-cal like calendar straight from the command line (holidays are indicated by brackets)...

```bash
ecal XNYS 2020
```
                                            2020
            January                        February                        March
    Su  Mo  Tu  We  Th  Fr  Sa     Su  Mo  Tu  We  Th  Fr  Sa     Su  Mo  Tu  We  Th  Fr  Sa
                [ 1]  2   3 [ 4]                           [ 1]
    [ 5]  6   7   8   9  10 [11]   [ 2]  3   4   5   6   7 [ 8]   [ 1]  2   3   4   5   6 [ 7]
    [12] 13  14  15  16  17 [18]   [ 9] 10  11  12  13  14 [15]   [ 8]  9  10  11  12  13 [14]
    [19][20] 21  22  23  24 [25]   [16][17] 18  19  20  21 [22]   [15] 16  17  18  19  20 [21]
    [26] 27  28  29  30  31        [23] 24  25  26  27  28 [29]   [22] 23  24  25  26  27 [28]
                                                                  [29] 30  31

            April                           May                            June
    Su  Mo  Tu  We  Th  Fr  Sa     Su  Mo  Tu  We  Th  Fr  Sa     Su  Mo  Tu  We  Th  Fr  Sa
                  1   2   3 [ 4]                         1 [ 2]         1   2   3   4   5 [ 6]
    [ 5]  6   7   8   9 [10][11]   [ 3]  4   5   6   7   8 [ 9]   [ 7]  8   9  10  11  12 [13]
    [12] 13  14  15  16  17 [18]   [10] 11  12  13  14  15 [16]   [14] 15  16  17  18  19 [20]
    [19] 20  21  22  23  24 [25]   [17] 18  19  20  21  22 [23]   [21] 22  23  24  25  26 [27]
    [26] 27  28  29  30            [24][25] 26  27  28  29 [30]   [28] 29  30
                                   [31]

                July                          August                       September
    Su  Mo  Tu  We  Th  Fr  Sa     Su  Mo  Tu  We  Th  Fr  Sa     Su  Mo  Tu  We  Th  Fr  Sa
                  1   2 [ 3][ 4]                           [ 1]             1   2   3   4 [ 5]
    [ 5]  6   7   8   9  10 [11]   [ 2]  3   4   5   6   7 [ 8]   [ 6][ 7]  8   9  10  11 [12]
    [12] 13  14  15  16  17 [18]   [ 9] 10  11  12  13  14 [15]   [13] 14  15  16  17  18 [19]
    [19] 20  21  22  23  24 [25]   [16] 17  18  19  20  21 [22]   [20] 21  22  23  24  25 [26]
    [26] 27  28  29  30  31        [23] 24  25  26  27  28 [29]   [27] 28  29  30
                                   [30] 31

            October                        November                       December
    Su  Mo  Tu  We  Th  Fr  Sa     Su  Mo  Tu  We  Th  Fr  Sa     Su  Mo  Tu  We  Th  Fr  Sa
                      1   2 [ 3]                                            1   2   3   4 [ 5]
    [ 4]  5   6   7   8   9 [10]   [ 1]  2   3   4   5   6 [ 7]   [ 6]  7   8   9  10  11 [12]
    [11] 12  13  14  15  16 [17]   [ 8]  9  10  11  12  13 [14]   [13] 14  15  16  17  18 [19]
    [18] 19  20  21  22  23 [24]   [15] 16  17  18  19  20 [21]   [20] 21  22  23  24 [25][26]
    [25] 26  27  28  29  30 [31]   [22] 23  24  25 [26] 27 [28]   [27] 28  29  30  31
                                   [29] 30

```bash
ecal XNYS 1 2020
```

            January 2020
    Su  Mo  Tu  We  Th  Fr  Sa
                [ 1]  2   3 [ 4]
    [ 5]  6   7   8   9  10 [11]
    [12] 13  14  15  16  17 [18]
    [19][20] 21  22  23  24 [25]
    [26] 27  28  29  30  31

## Frequently Asked Questions

### **How can I create a new calendar?**

First off, make sure the calendar you're after hasn't already been defined; exchange calendars comes with over [50 pre-defined calendars](#Calendars), including major security exchanges.

If you can't find what you're after, a custom calendar can be created as a subclass of [ExchangeCalendar](exchange_calendars/exchange_calendar.py). [This workflow](.github/pull_request_template.md) describes the process to add a new calendar to `exchange_calendars`. Just follow the relevant parts.

To access the new calendar via `get_calendar` call either `xcals.register_calendar` or `xcals.register_calendar_type` to register, respectively, a specific calendar instance or a calendar factory (i.e. the subclass).

### **Can I contribute a new calendar to exchange calendars?**

Yes please! The workflow can be found [here](.github/pull_request_template.md).

### **`<calendar>` is missing a holiday, has a wrong time, should have a break etc...**

**All** of the exchange calendars are maintained by user contributions. If a calendar you care about needs revising, please open a [PR](https://github.com/gerrymanoim/exchange_calendars/pulls) - that's how this thing works! (Never contributed to a project before and it all seems a bit daunting? Check [this out](https://github.com/firstcontributions/first-contributions/blob/main/README.md) and don't look back!)

You'll find the workflow to modify an existing calendar [here](.github/pull_request_template.md).

### **What times are considered open and closed?**

`exchange_calendars` attempts to be broadly useful by considering an exchange to be open only during periods of regular trading. During any pre-trading, post-trading or auction period the exchange is treated as closed. An exchange is also treated as closed during any observed lunch break.

See the [minutes tutorial](docs/tutorials/minutes.ipynb) for a detailed explanation of which minutes an exchange is considered open over. If you previously used `trading_calendars`, or `exchange_calendars` prior to release 3.4, then this is the place to look for answers to questions of how the definition of trading minutes has changed over time (and is now stable and flexible!).

## Calendars

| Exchange                        | ISO Code | Country        | Version Added | Exchange Website (English)                                   |
|---------------------------------|----------| -------------- |---------------| ------------------------------------------------------------ |
| New York Stock Exchange         | XNYS     | USA            | 1.0           | https://www.nyse.com/index                                   |
| CBOE Futures                    | XCBF     | USA            | 1.0           | https://markets.cboe.com/us/futures/overview/                |
| Chicago Mercantile Exchange     | CMES     | USA            | 1.0           | https://www.cmegroup.com/                                    |
| ICE US                          | IEPA     | USA            | 1.0           | https://www.theice.com/index                                 |
| Toronto Stock Exchange          | XTSE     | Canada         | 1.0           | https://www.tsx.com/                                         |
| BMF Bovespa                     | BVMF     | Brazil         | 1.0           | http://www.b3.com.br/en_us/                                  |
| London Stock Exchange           | XLON     | England        | 1.0           | https://www.londonstockexchange.com/                         |
| Euronext Amsterdam              | XAMS     | Netherlands    | 1.2           | https://www.euronext.com/en/regulation/amsterdam             |
| Euronext Brussels               | XBRU     | Belgium        | 1.2           | https://www.euronext.com/en/regulation/brussels              |
| Euronext Lisbon                 | XLIS     | Portugal       | 1.2           | https://www.euronext.com/en/regulation/lisbon                |
| Euronext Paris                  | XPAR     | France         | 1.2           | https://www.euronext.com/en/regulation/paris                 |
| Frankfurt Stock Exchange        | XFRA     | Germany        | 1.2           | http://en.boerse-frankfurt.de/                               |
| SIX Swiss Exchange              | XSWX     | Switzerland    | 1.2           | https://www.six-group.com/en/home.html                       |
| Tokyo Stock Exchange            | XTKS     | Japan          | 1.2           | https://www.jpx.co.jp/english/                               |
| Australian Securities Exchange  | XASX     | Australia      | 1.3           | https://www.asx.com.au/                                      |
| Bolsa de Madrid                 | XMAD     | Spain          | 1.3           | https://www.bolsamadrid.es                                   |
| Borsa Italiana                  | XMIL     | Italy          | 1.3           | https://www.borsaitaliana.it                                 |
| New Zealand Exchange            | XNZE     | New Zealand    | 1.3           | https://www.nzx.com/                                         |
| Wiener Borse                    | XWBO     | Austria        | 1.3           | https://www.wienerborse.at/en/                               |
| Hong Kong Stock Exchange        | XHKG     | Hong Kong      | 1.3           | https://www.hkex.com.hk/?sc_lang=en                          |
| Copenhagen Stock Exchange       | XCSE     | Denmark        | 1.4           | http://www.nasdaqomxnordic.com/                              |
| Helsinki Stock Exchange         | XHEL     | Finland        | 1.4           | http://www.nasdaqomxnordic.com/                              |
| Stockholm Stock Exchange        | XSTO     | Sweden         | 1.4           | http://www.nasdaqomxnordic.com/                              |
| Oslo Stock Exchange             | XOSL     | Norway         | 1.4           | https://www.oslobors.no/ob_eng/                              |
| Irish Stock Exchange            | XDUB     | Ireland        | 1.4           | http://www.ise.ie/                                           |
| Bombay Stock Exchange           | XBOM     | India          | 1.5           | https://www.bseindia.com                                     |
| Singapore Exchange              | XSES     | Singapore      | 1.5           | https://www.sgx.com                                          |
| Shanghai Stock Exchange         | XSHG     | China          | 1.5           | http://english.sse.com.cn                                    |
| Korea Exchange                  | XKRX     | South Korea    | 1.6           | http://global.krx.co.kr                                      |
| Iceland Stock Exchange          | XICE     | Iceland        | 1.7           | http://www.nasdaqomxnordic.com/                              |
| Poland Stock Exchange           | XWAR     | Poland         | 1.9           | http://www.gpw.pl                                            |
| Santiago Stock Exchange         | XSGO     | Chile          | 1.9           | https://www.bolsadesantiago.com/                             |
| Colombia Securities Exchange    | XBOG     | Colombia       | 1.9           | https://www.bvc.com.co/nueva/https://www.bvc.com.co/nueva/   |
| Mexican Stock Exchange          | XMEX     | Mexico         | 1.9           | https://www.bmv.com.mx                                       |
| Lima Stock Exchange             | XLIM     | Peru           | 1.9           | https://www.bvl.com.pe                                       |
| Prague Stock Exchange           | XPRA     | Czech Republic | 1.9           | https://www.pse.cz/en/                                       |
| Budapest Stock Exchange         | XBUD     | Hungary        | 1.10          | https://bse.hu/                                              |
| Athens Stock Exchange           | ASEX     | Greece         | 1.10          | http://www.helex.gr/                                         |
| Istanbul Stock Exchange         | XIST     | Turkey         | 1.10          | https://www.borsaistanbul.com/en/                            |
| Johannesburg Stock Exchange     | XJSE     | South Africa   | 1.10          | https://www.jse.co.za/z                                      |
| Malaysia Stock Exchange         | XKLS     | Malaysia       | 1.11          | http://www.bursamalaysia.com/market/                         |
| Moscow Exchange                 | XMOS     | Russia         | 1.11          | https://www.moex.com/en/                                     |
| Philippine Stock Exchange       | XPHS     | Philippines    | 1.11          | https://www.pse.com.ph/                                      |
| Stock Exchange of Thailand      | XBKK     | Thailand       | 1.11          | https://www.set.or.th/set/mainpage.do?language=en&country=US |
| Indonesia Stock Exchange        | XIDX     | Indonesia      | 1.11          | https://www.idx.co.id/                                       |
| Taiwan Stock Exchange Corp.     | XTAI     | Taiwan         | 1.11          | https://www.twse.com.tw/en/                                  |
| Buenos Aires Stock Exchange     | XBUE     | Argentina      | 1.11          | https://www.bcba.sba.com.ar/                                 |
| Pakistan Stock Exchange         | XKAR     | Pakistan       | 1.11          | https://www.psx.com.pk/                                      |
| Xetra                           | XETR     | Germany        | 2.1           | https://www.xetra.com/                                       |
| Tel Aviv Stock Exchange         | XTAE     | Israel         | 2.1           | https://www.tase.co.il/                                      |
| Astana International Exchange   | AIXK     | Kazakhstan     | 3.2           | https://www.aix.kz/                                          |
| Bucharest Stock Exchange        | XBSE     | Romania        | 3.2           | https://www.bvb.ro/                                          |
| Saudi Stock Exchange            | XSAU     | Saudi Arabia   | 4.2           | https://www.saudiexchange.sa/                                |
| European Energy Exchange AG     | XEEE     | Germany        | 4.5.5         | https://www.eex.com                                          |
| Hamburg Stock Exchange          | XHAM     | Germany        | 4.5.5         | https://www.boerse-hamburg.de                                |
| Duesseldorf Stock Exchange      | XDUS     | Germany        | 4.5.5         | https://www.boerse-duesseldorf.de                            |
| Luxembourg Stock Exchange       | XLUX     | Luxembourg     | 4.8           | https://www.luxse.com/                                       |
| Tallinn Stock Exchange          | XTAL     | Estonia        | 4.11          | https://nasdaqbaltic.com                                     |
| Riga Stock Exchange             | XRIS     | Latvia         | 4.11          | https://nasdaqbaltic.com                                     |
| Vilnius Stock Exchange          | XLIT     | Lithuania      | 4.11          | https://nasdaqbaltic.com                                     |
| Cyprus Stock Exchange           | XCYS     | Cyprus         | 4.11.1        | https://www.cse.com.cy/en-GB/home                            |
| Bermuda Stock Exchange          | XBDA     | Bermuda        | 4.11.1        | https://www.bsx.com                                          |
| Zagreb Stock Exchange           | XZAG     | Croatia        | 4.11.1        | https://www.zse.hr/en                                        |
| Ljubljana Stock Exchange        | XLJU     | Slovenia       | 4.11.3        | https://ljse.si/en                                           |
| Bratislava Stock Exchange       | XBRA     | Slovakia       | 4.11.3        | https://www.bsse.sk/bcpb/en                                  |
| Belgrade Stock Exchange         | XBEL     | Serbia         | 4.11.3        | https://www.belex.rs/eng                                     |
| Eurex                           | XEUR     | Germany        | 4.13.2        | https://www.eurex.com/ex-en/                                 |
| Börse Stuttgart                 | XSTU     | Germany        | 4.13.2        | https://www.boerse-stuttgart.de/en                           |


> Note that exchange calendars are defined by their [ISO-10383](https://www.iso20022.org/10383/iso-10383-market-identifier-codes) market identifier code.

## market-prices
Much of the post v3 development of `exchange_calendars` was driven by the [`market_prices`](https://github.com/maread99/market_prices) library. Check it out if you like the idea of using `exchange_calendars` to create meaningful OHLCV datasets. It works out-the-box with freely available data!

## Deprecations and Renaming

### Methods renamed in version 4.0.3 and removed in 4.3
| Previous name | New name |
| ------------- | -------- |
| bound_start | bound_min |
| bound_end | bound_max |

### Methods deprecated in 4.0 and removed in 4.3
| Deprecated method | Reason |
| ----------------- | ------ |
| sessions_closes | use `.closes[start:end]` |
| sessions_opens | use `.opens[start:end]` |

### Methods with a parameter renamed in 4.0
| Method
| ------
| is_session |
| is_open_on_minute |
| minutes_in_range |
| minutes_window |
| next_close |
| next_minute |
| next_open |
| previous_close |
| previous_minute |
| previous_open |
| session_break_end |
| session_break_start |
| session_close |
| session_open |
| sessions_in_range |
| sessions_window |

### Methods renamed in version 3.4 and removed in 4.0
| Previous name | New name |
| ------------- | -------- |
| all_minutes | minutes |
| all_minutes_nanos | minutes_nanos |
| all_sessions | sessions |
| break_start_and_end_for_session | session_break_start_end |
| date_to_session_label | date_to_session |
| first_trading_minute | first_minute |
| first_trading_session | first_session |
| has_breaks | sessions_has_break |
| last_trading_minute | last_minute |
| last_trading_session | last_session |
| next_session_label | next_session |
| open_and_close_for_session | session_open_close |
| previous_session_label | previous_session |
| market_break_ends_nanos | break_ends_nanos |
| market_break_starts_nanos | break_starts_nanos |
| market_closes_nanos | closes_nanos |
| market_opens_nanos | opens_nanos |
| minute_index_to_session_labels | minutes_to_sessions |
| minute_to_session_label | minute_to_session |
| minutes_count_for_sessions_in_range | sessions_minutes_count |
| minutes_for_session | session_minutes |
| minutes_for_sessions_in_range | sessions_minutes |
| session_closes_in_range | sessions_closes |
| session_distance | sessions_distance |
| session_opens_in_range | sessions_opens |

### Other methods deprecated in 3.4 and removed in 4.0
| Removed Method
| -----------------
| execution_minute_for_session
| execution_minute_for_sessions_in_range
| execution_time_from_close
| execution_time_from_open
