Hi, The start and end date of events in Aeon Timeline are inclusive - for example, an event starting in January and ending in March lasts for 3 months (January, February and March). Therefore in your case, an event from year 1000 to year 2000 includes the year 2000, putting the total duration to 1001 years. You can read more about that here: https://help.aeontimeline.com/article/45-representing-dates-and-durations Jess
Ok, thanks is it possible to change it for at timeline?
Hi, Unfortunately no, there is no way to change this for the timeline. Jess