# Set up start and end dates for discounts

You can set up start and end dates for both discount coupons and promotions for creating timed offers, such as a **Black Friday** discount.

{% hint style="info" %}
If you don't yet have an app for Ecwid API access, start with the following [instructions](https://docs.ecwid.com/discounts-and-tips/customize-discounts/spaces/uOzT5egoVTAjMJwRuMQT/pages/IhHAmacGKQdbD0Fe0IUw#step-2.-get-your-first-application).
{% endhint %}

### Start and end dates for promotion

If you have an existing promotion, you can change its start and end dates with the following API call:

```http
PUT /api/v3/STOREID/promotions/PROMOTIONID
Host: app.ecwid.com
Content-Type: application/json
Authorization: Bearer secret_token

{
    "triggers": {
        "startDate": "2025-03-06 00:00:00 +0000",
        "endDate": "2025-03-30 23:00:00 +0000"
    }
}
```

Change `STOREID` with your store ID, `PROMOTIONID` with the promotion ID ([find promotion ID](/api-reference/rest-api/discounts/promotions/search-promotions.md)), and the `secret_token` with the secret access token of your app.

### Start and end dates for discount coupon

If you have an existing discount coupon, you can change its start and end dates with the following API call:

```http
PUT /api/v3/STOREID/discount_coupons/DISCOUNTCOUPONID
Host: app.ecwid.com
Content-Type: application/json
Authorization: Bearer secret_token

{
    "launchDate": "2025-03-06 00:00:00 +0000",
    "expirationDate": "2025-03-30 12:00:00 +0000"
}
```

Change `STOREID` with your store ID, `DISCOUNTCOUPONID` with the discount coupon ID ([find discount coupon ID](/api-reference/rest-api/discounts/discount-coupons/search-discount-coupons.md)), and the `secret_token` with the secret access token of your app.


---

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