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I understand that you are facing issues with the cron.timezone parameter in pg_cron on Azure PostgreSQL flexible server. I'm sorry to hear that you are facing this issue.
As of now, the cron.timezone parameter is not available as a dynamic parameter in Azure PostgreSQL flexible server.
However, you can set the timezone parameter in your PostgreSQL configuration file (postgresql.conf) to the desired time zone. This will set the default time zone for all connections to the database.
For more Information, please refer the document: https://github.com/citusdata/pg_cron
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