[Cicero]

We visited Fingal’s Cave, and the Monastery on Iona from which much of Europe was Christianized. We were there at the vernal equinox, and the sun went below the horizon for about half an hour, but it never really got dark.

[Verginius Rufus]

I assume you meant the summer solstice--at the vernal equinox there are 12 hours of day and 12 hours of night.

Scotland's latitudes are roughly equivalent to the Alaska panhandle's.