at/by night?

Marta   Mon Sep 24, 2007 6:21 pm GMT
is there a difference between at night and by night?
if so, i'd appreciate an example or two
thank you
statian   Mon Sep 24, 2007 7:11 pm GMT
1) "They travel by night"
2) "They travel at night"

1) Seems to imply they travel only at night, whereas 2) seems to imply they sometimes/often travel during the night, but perhaps also during the day.
furrykef   Tue Sep 25, 2007 1:03 am GMT
In most other contexts, "at night" is the only possible choice: one studies at night rather than studying by night.

- Kef
TBD   Wed Sep 26, 2007 11:35 pm GMT
I believe "by night" is an archaic form.
Josh Lalonde   Thu Sep 27, 2007 3:17 am GMT
I think 'by night' implies that it's habitual. If you're only driving for one night, you might say "we'll travel at night", but if you do it every day, you would say "we travel by night". I don't think either choice is wrong in those situations, but those ones seem better to me. 'By night' is definitely not archaic here.