If you ever wanted to share a youtube video not only with the timestamp from where to beging, but also with a timestamp where to end, use the embed API instead of the normal youtube sharing feature.
https://www.youtube.com/watch?v=0_qShAZg2Zw (normal youtube link, can only specify a beginning timestamp like this: https://youtu.be/0_qShAZg2Zw?t=7s)
The embed endpoint allows a start and an end:
(mind the “embed” part and the start/end params)
The IDs of the videos are always the same:
0_qShAZg2Zw in all three variants.
So simply copy/paste the rest of the url.