After read the documentation and in the support I found that I need take the start date from "event.context.eventRecord.startDate", but I found that the date net changed yet.
I check the hole context data in console with debugger after for stop the propagation in my case I drop the event like this:
Screenshot 2022-08-08 101631.png (20.87 KiB) Viewed 342 times
And can't find this date inside the context(I need this date before the finalize(true)).
Screenshot 2022-08-08 101904.png (106.82 KiB) Viewed 342 times
I create simple demo based on 5.1.1 v (basic demo).
I need the real start date between the async=true and finalize(true).
In drop event I need also the real drop start date and not after some shifting that you do.
For reproduce the problem you need to open the example and drop like this:
Screenshot 2022-08-09 111658.png (26.37 KiB) Viewed 312 times
Sorry that I misunderstood, I am not able to drop it in the initialized zoom to 10:15 am. I need to change the start date of the event with the editor. which is not going to trigger beforeEventDropFinalize.