If you see that the order creation time looks incorrect, it makes sense to check the timezone from your account settings. Here's how to check it out:

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However, this does not affect the time shown on generated documents. If you want to change that, use the below expression function:

​{% datetime({datetimeString}, {timezone}, {addDays}, {outputFormat}) %}.

Also, make sure your Text component format is set to "Date". You can read more about expression language functions from the template editor's help menu.
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