Mark Brader wrote:
Mike Harvey writes:


Carte Orange quick facts

...

* The weekly pass (called a coupon hebdomadaire) is valid Monday to
Sunday only. Be sure you can communicate the dates that you want, or
that you'd like a Carte Orange for the next week starting Monday.
Otherwise you may be sold a pass that is only valid for the rest of the
week.


And then:


You can buy it up to Wednesday for use in the current week, and from
Friday for use the next week. (No weekly passes sold on Thursdays)


Make up your mind!

It's not contradictory.

If you buy it on a Tuesday or Wednesday, then you only get 6 or 5 days
use out of it, i.e. it's still only valid to Sunday.

IIRC, the monthly is similar, i.e. it runs on the calendar month, and
you can buy the current month up to 23rd (21st?) of the month.

The point is that you can buy it part-way through its validity, as long
as you accept that you won't get a full week's use out of it.