Hi @Pragadeesh ,
By default, the time zone is always UTC, but you can change it. You should be able to change the time zine using the configurations blade in the Azure portal. What value are you using to set the time zone?
You can also try using kudu. You can find a list of supported time zone here or here. You can also find the list in your registry under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones
. If the string is not recognized, it falls back to UTC. The best way to test that it works is to type time
from Kudu console.
You can also see this relate Stack Overflow question.
Hope that helps. Let us know if you have further questions
-Grace