You can use a backstaff or a sextant. Then you need not look at the sun.
https://en.wikipedia.org/wiki/Backstaff
https://en.wikipedia.org/wiki/Sextant
It doesn't even need batteries.
You can use a backstaff or a sextant. Then you need not look at the sun.
https://en.wikipedia.org/wiki/Backstaff
https://en.wikipedia.org/wiki/Sextant
It doesn't even need batteries.