---
id: quote_optionchain_date
title: Expiry Dates
slug: /quote/options/optionchain-date
sidebar_position: 11
---

This API is used to obtain the the list of expiration dates of option chain


## SDK

| Language | Link |
|---|---|
| Python | [longport.openapi.quote._quote_context](https://longportapp.github.io/openapi/python/reference_all/#longport.openapi.quote._quote_context) |
| Rust | [longport::<SDKLinks module="quote" klass="QuoteContext" method="option_chain_expiry_date_list" />::quote#_quote_context](https://longportapp.github.io/openapi/rust/longport/<SDKLinks module="quote" klass="QuoteContext" method="option_chain_expiry_date_list" />/struct.quote.html#method._quote_context) |
| Go | [quote.option_chain_expiry_date_list](https://pkg.go.dev/github.com/longportapp/openapi-go/<SDKLinks module="quote" klass="QuoteContext" method="option_chain_expiry_date_list" />#quote.option_chain_expiry_date_list) |
| Node.js | [quote#QuoteContext](https://longportapp.github.io/openapi/nodejs/classes/quote.html#quotecontext) |

:::info

[Business Command](../../socket/biz_command): `20`

:::

## Request

### Parameters

| Name   | Type   | Required | Description                                                    |
| ------ | ------ | -------- | -------------------------------------------------------------- |
| symbol | string | Yes      | Security code, in `ticker.region` format, for example:`700.HK` |

### Protobuf

```protobuf
message SecurityRequest {
  string symbol = 1;
}
```

### Request Example

<Tabs groupId="request-example">
  <TabItem value="python" label="Python" default>

```python
from longport.openapi import QuoteContext, Config, OAuthBuilder

oauth = OAuthBuilder("your-client-id").build(lambda url: print("Visit:", url))
config = Config.from_oauth(oauth)
ctx = QuoteContext(config)

resp = ctx.option_chain_expiry_date_list("AAPL.US")
print(resp)
```

  </TabItem>
  <TabItem value="python-async" label="Python (async)">

```python
import asyncio
from longport.openapi import AsyncQuoteContext, Config, OAuthBuilder

async def main() -> None:
    oauth = await OAuthBuilder("your-client-id").build_async(lambda url: print("Visit:", url))
    config = Config.from_oauth(oauth)
    ctx = AsyncQuoteContext.create(config)

    resp = await ctx.option_chain_expiry_date_list("AAPL.US")
    print(resp)

if __name__ == "__main__":
    asyncio.run(main())
```

  </TabItem>
  <TabItem value="nodejs" label="Node.js">

```javascript
const { Config, QuoteContext, OAuth } = require('longport')

async function main() {
  const oauth = await OAuth.build('your-client-id', (_, url) => {
    console.log('Open this URL to authorize: ' + url)
  })
  const config = Config.fromOAuth(oauth)
  const ctx = QuoteContext.new(config)
  const resp = await ctx.optionChainExpiryDateList('AAPL.US')
  console.log(resp)
}
main().catch(console.error)
```

  </TabItem>
  <TabItem value="java" label="Java">

```java
import com.longport.*;
import com.longport.quote.*;

class Main {
    public static void main(String[] args) throws Exception {
        try (OAuth oauth = new OAuthBuilder("your-client-id")
                .build(url -> System.out.println("Open to authorize: " + url))
                .get();
             Config config = Config.fromOAuth(oauth);
             QuoteContext ctx = QuoteContext.create(config)) {
            LocalDate[] resp = ctx.getOptionChainExpiryDateList("AAPL.US").get();
            for (LocalDate d : resp) System.out.println(d);
        }
    }
}
```

  </TabItem>
  <TabItem value="rust" label="Rust">

```rust
use std::sync::Arc;
use longport::{oauth::OAuthBuilder, quote::QuoteContext, Config};

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let oauth = OAuthBuilder::new("your-client-id")
        .build(|url| println!("Open this URL to authorize: {url}"))
        .await?;
    let config = Arc::new(Config::from_oauth(oauth));
    let (ctx, _) = QuoteContext::new(config);
    let resp = ctx.option_chain_expiry_date_list("AAPL.US").await?;
    println!("{:?}", resp);
    Ok(())
}
```

  </TabItem>
  <TabItem value="cpp" label="C++">

```cpp
#include <iostream>
#include <longport.hpp>

#ifdef WIN32
#include <windows.h>
#endif

using namespace longport;
using namespace longport::quote;

static void
run(const OAuth& oauth)
{
    Config config = Config::from_oauth(oauth);
    QuoteContext ctx = QuoteContext::create(config);

    ctx.option_chain_expiry_date_list("AAPL.US", [](auto res) {
        if (!res) {
            std::cout << "failed: " << *res.status().message() << std::endl;
            return;
        }
        for (const auto& d : *res) std::cout << d.year << "-" << (int)d.month << "-" << (int)d.day << std::endl;
    });
}

int main(int argc, char const* argv[]) {
#ifdef WIN32
    SetConsoleOutputCP(CP_UTF8);
#endif

    const std::string client_id = "your-client-id";
    OAuthBuilder(client_id).build(
    [](const std::string& url) {
        std::cout << "Open this URL to authorize: " << url << std::endl;
    },
    [](auto res) {
        if (!res) {
            std::cout << "authorization failed: " << *res.status().message() << std::endl;
            return;
        }
        run(*res);
    });

    std::cin.get();
    return 0;
}
```

  </TabItem>
  <TabItem value="go" label="Go">

```go
package main

import (
	"context"
	"fmt"
	"log"

	"github.com/longportapp/openapi-go/config"
	"github.com/longportapp/openapi-go/oauth"
	"github.com/longportapp/openapi-go/quote"
)

func main() {
	o := oauth.New("your-client-id").
		OnOpenURL(func(url string) { fmt.Println("Open this URL to authorize:", url) })
	if err := o.Build(context.Background()); err != nil {
		log.Fatal(err)
	}
	conf, err := config.New(config.WithOAuthClient(o))
	if err != nil {
		log.Fatal(err)
	}
	qctx, err := quote.NewFromCfg(conf)
	if err != nil {
		log.Fatal(err)
	}
	defer qctx.Close()
	dates, err := qctx.OptionChainExpiryDateList(context.Background(), "AAPL.US")
	if err != nil {
		log.Fatal(err)
	}
	for _, d := range dates {
		fmt.Println(d.Format("2006-01-02"))
	}
}
```

  </TabItem>
</Tabs>

## Response

### Response Properties

| Name        | Type     | Description                                        |
| ----------- | -------- | -------------------------------------------------- |
| expiry_date | string[] | option chain expiry dates list，in `YYMMDD` format |

### Protobuf

```protobuf
message OptionChainDateListResponse {
  repeated string expiry_date = 1;
}
```

### Response JSON Example

```json
{
  "expiry_date": [
    "20220422",
    "20220429",
    "20220506",
    "20220513",
    "20220520",
    "20220527",
    "20220603",
    "20220617",
    "20220715",
    "20220819",
    "20220916",
    "20221021",
    "20221118",
    "20230120",
    "20230317",
    "20230616",
    "20230915",
    "20240119",
    "20240621"
  ]
}
```

## Error Code

| Protocol Error Code | Business Error Code | Description        | Troubleshooting Suggestions                                   |
| ------------------- | ------------------- | ------------------ | ------------------------------------------------------------- |
| 3                   | 301600              | Invalid request    | Invalid request parameters or unpacking request failed        |
| 3                   | 301606              | Request rate limit | Reduce the frequency of requests                              |
| 7                   | 301602              | Server error       | Please try again or contact a technician to resolve the issue |
| 7                   | 301600              | Symbol not found   | Check that the requested `symbol` is correct                  |