Hi Mansi Gusain,
Thanks for reaching out to Microsoft!
To set the time zone to Central European Standard Time (CEST) using the Microsoft Graph API, use the identifier "W. Europe Standard Time". This corresponds to (UTC+01:00) Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna.
Use the Prefer: outlook.timezone
header to specify the time zone for the start and end times in the response:
Prefer: outlook.timezone="W. Europe Standard Time"
Hope this helps.
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