Is there a two day constraint?

[mdavis-xyz]

The documentation for GET /flights/departure says:

The given time interval must cover more than two days (UTC)!

The test goes from

1517227200
to
1517230800

Which is 1 hour, which is less than two days.

This test does seem to pass for me.

So it seems that either:

• there is no 2 day requirement. The documentation should be updated; or
• the 2 day requirement is soft. Maybe you'll get results, maybe you won't. If so, the test shouldn't test for undefined behavior, and should use a wider timespan

[mdavis-xyz]

Note that the tests and python docs say "The time interval must be smaller than 7 days".

However when I test, it seems that there is a 2 day constraint, based on the date at UTC. (i.e. most 47 hour periods count as being 3 days.)

So I think the part of the docs saying

The given time interval must cover more than two days (UTC)!

are incorrect, and should say

The given time interval must cover no more than two days (UTC)!

I'm including this in my next pull request.