What exposure time corresponds to the “N” setting (Normal) on my Holga?
There is no really concrete answer to these questions.
Some sources speak of 1/100 of a second, other sources say 1/125 of a second.
In addition there are of course differences due to the simple construction and similar things. So some users report times from 1/60 s to about 1/30 s.
So it’s not really clear, it’s best to start with something around 1/100 second and try something around. And in the end it’s not that important for Holga photography.