Hi @magentopits. Thank you for your report.
To help us process this issue please make sure that you provided the following information:

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• Information on your environment
• Steps to reproduce
• Expected and actual results

Please make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce. To deploy vanilla Magento instance on our environment, please, add a comment to the issue:

@magento give me 2.4-develop instance - upcoming 2.4.x release

For more details, please, review the Magento Contributor Assistant documentation.

@magentopits do you confirm that you were able to reproduce the issue on vanilla Magento instance following steps to reproduce?

• yes
• no

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@magento give me 2.3-develop instance

Hi @magentopits. Thank you for your request. I'm working on Magento 2.4-develop instance for you

Hi @magentopits, here is your Magento instance.
Admin access: https://i-26565-2-4-develop.instances.magento-community.engineering/admin_9ff6
Login: e63bae5e Password: c2e324309205
Instance will be terminated in up to 3 hours.

@magento give me 2.3-develop instance , with German language pack installed.

I tried to install magento/language-de_de via Extension Manager but its error .

Hi @magentopits. Thank you for your request. I'm working on Magento 2.3-develop instance for you

Hi @engcom-Hotel. Thank you for working on this issue.
In order to make sure that issue has enough information and ready for development, please read and check the following instruction: 👇

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• 3. Add Component: XXXXX label(s) to the ticket, indicating the components it may be related to.

• 4. Verify that the issue is reproducible on 2.4-develop branch

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✅ Confirmed by @engcom-Hotel
Thank you for verifying the issue. Based on the provided information internal tickets MC-30916 were created

Issue Available: @engcom-Hotel, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.

Hi @cstergianos. Thank you for working on this issue.
Looks like this issue is already verified and confirmed. But if you want to validate it one more time, please, go though the following instruction:

• 1. Add/Edit Component: XXXXX label(s) to the ticket, indicating the components it may be related to.

• 2. Verify that the issue is reproducible on 2.4-develop branch

  Details

  - Add the comment @magento give me 2.4-develop instance to deploy test instance on Magento infrastructure.
  - If the issue is reproducible on 2.4-develop branch, please, add the label Reproduced on 2.4.x.
  - If the issue is not reproducible, add your comment that issue is not reproducible and close the issue and stop verification process here!

• 3. If the issue is not relevant or is not reproducible any more, feel free to close it.

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Any update on this issue ?

@engcom-Hotel, I have checked and found there is no translation available for short day name in CSV.

Hi i'm having the same issue, in magento 2.3.3 with locale set to pt_br, is there a fix yet?

Very nice !!! 😊