Hi @sjsk, welcome to the QuickSight Community, try using the following function:
parseDate({EventDate}, 'EEE MMM dd HH:mm:ss z yyyy')
In case you need further assistance with your problem, please create a sample dashboard with sample dataset showing your problem state using Arena and please create a new post, so we can look at it from a fresh perspective. (Details on using Arena can be found here - QuickSight Arena)
Did this solution work for you? I am marking this reply as, “Solution,” but let us know if this is not resolved. Thanks for posting your questions on the QuickSight Community!