node-red is installed on my raspberry pi based device. Its system time is also set correctly as per my laptop where I am watching dashboard in browser.
yes, node-red is running as container through Docker.
Alternatively ask yourself why you are using Docker. If you don't really know then possibly best not to. Instead install not-red using the usual recommended route.
I am working on it as you requested, please find below docker timezone details. how can we change this. It is showing 30 minutes later time you can see below screenshot, Indian time is 16:30 pm.