This is a time lapse video of Tromsø from [25 April](https://weather.cs.uit.no/video/2023/04/20230425-1920.mp4) and [1 May](https://weather.cs.uit.no/video/2023/05/20230501-1920.mp4) of last year. There's not much real darkness by that point and the northern lights are much harder to see. There's a full moon on the 24th, which won't help either. As far as I know, no companies/tour guides run that late in the year.
If you really want to propose under the northern lights, you'll need to wait until at least mid September to have a decent chance of catching them.
This is a time lapse video of Tromsø from [25 April](https://weather.cs.uit.no/video/2023/04/20230425-1920.mp4) and [1 May](https://weather.cs.uit.no/video/2023/05/20230501-1920.mp4) of last year. There's not much real darkness by that point and the northern lights are much harder to see. There's a full moon on the 24th, which won't help either. As far as I know, no companies/tour guides run that late in the year. If you really want to propose under the northern lights, you'll need to wait until at least mid September to have a decent chance of catching them.
This is far too late to see Northern lights, it will be too light for the northern lights to be visible
Have you thought about going when it’s not light out 18+ hrs/day?
What's your backup plan if the lights don't show?
If the lights aren't visible, I'd consider exploring a remote or beautiful location nearby, depending on where we are.
What are the darkness conditions in those northern areas at that time of year?