Suppose you wish to know what all tasks and events got initiated on Monday 09:00 AM. Here is tip. It is so simple and least used by admins, I can bet.
Simply select cluster/Host/Virtual Machine or any inventory object which you wish to check in that time span.
Go to Tasks & Events
For Tasks, select task button as highlighted below.
From the contains menu select start time as highlighted below.
There you go and see what happened at 09:00 AM.
(I need to do something with images, I know they aren’t clear unless you double click on them)
For Events, select events button as highlighted below
From the contains menu select date time as highlighted below
There you go and see what happened at 08:05 AM
Filtering does this magic.