Hi Tomek Lechowicz
Based on the shared details, we have checked on our end using the Timescale and End Hours, and the events are displayed properly. For your reference, we have attached a sample below.
Sample: https://stackblitz.com/edit/react-znxbhmnn-sdytofkx?file=index.js
Furthermore, if there is a possibility that we misunderstood your requirement, we would greatly appreciate it if you could provide us with further information about your scenario. This will help us align our understanding with your expectations and provide you with the best possible assistance.
Regards,
Ashok