The period from late May to late June in the Baltic, especially Saint Petersburg, is known as white nights, because, as the name suggests, it essentially never gets dark. I can attest to this fact since I've strolled through Saint Petersburg at 11 o'clock at night, and I've woken up in Stockholm at 3 o'clock in the morning to catch an early plane. Yet I never saw the moon.
Here in the greater Pacific Northwest, it, too, stays light quite late, and the sunrise occurs very early on. With one exception. At times, it seems that you can see the moon at all hours of the day, unlike the Baltic (in my experience, at least--perhaps, this was the result of being in large cities).
I'm up on the mountain this weekend. So, having taken the dogs out for their evening playtime, I realized that the half-moon crescent looked crisp amidst the still-daylight-blue sky exactly at 9 pm.