Timezone parameter in Grafana URL not working

I am trying to pull Grafana dashboard as a panel iframe but I get the results in my browser’s timezone whereas I want timestamp to be in EST (UTC-5).

Here is the URL string I am working with. We are using Grafana 7.3.7 in our company.

[http://grafana/d-solo/p-G3DKeGk/***-iot?orgId=1&tz=05%3A00&from=1625108400000&to=1625140800000&…

Could you please provide suggestions on this.