Ornithogalum umbellatum, Grass lily

For most people, night-time is not a time to take pictures of flowers since
so many of them close up shop. This is a good example, the grass lily (or
Star-of-Bethlehem if you like names with religious significance). In the
daylight, each of these flowers opens up spectacularly, but at night they
close up for their nap. One of the names apparently for this is Nap-at-noon
and I have no idea why since it appear wide awake in the day.

It's natively a European and North African species but it has spread to
North America. The distribution map at Wikipedia doesn't show
Newfoundland, but there are plenty of examples of it here. Like this one,
in my friend's garden in St John's.