Open Radar

 
There’s some discussion about it here:
https://github.com/RevenueCat/purchases-ios/issues/491

The receipt generated by StoreKit Test has an incorrect value for timezone for expires_date. The date and time are correct, but they’re reported as UTC, and instead their values correspond to the user’s local time zone. 
So if you parse them to grant access to an IAP, if the user is in a timezone after UTC (i.e.: UTC +3), they’ll get 3 more hours of entitlement than they should, and if they’re in a timezone before UTC (i.e.: UTC -3), their purchases will have expired 3 hours before the real expiry date.

Here’s a sample: 

Receipt token: 

'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'

When parsed, it produces: 

{
  "bundle_id": "com.revenuecat.sampleapp",
  "application_version": "4",
  "receipt_creation_date": "2021-04-22T15:59:49+0800",
  "expiration_date": "4001-01-01T08:00:00+0800",
  "in_app": [
    {
      "quantity": 1,
      "product_id": "com.revenuecat.annual_39.99.2_week_intro",
      "transaction_id": "0",
      "purchase_date": "2021-04-22T15:59:49Z",
      "expires_date": "2022-04-22T15:59:49Z",
      "is_in_intro_offer_period": 1
    }
  ],
}

Note that the timezone for the expires_date and purchase_date there is reported as UTC, but the value of the date itself is in the user’s timezone.