allam,
Покопался в сети сейчас и нашёл:
The Paris Visit pass is valid for 1, 2, 3 or 5 consecutive days in zones 1 to 3 (close suburbs) or in zones 1 to 5 included airports CDG/Orly and Versailles. at adult and child prices** (from 4 to 11 inclusive). Each day begins at 05:30 and ends at 05:30 the following day.
It comes with a booklet of reductions in a range of partner establishments.
Logo RATP © DR
Depending on which zones you select, Paris Visit allows you to travel on:
metro lines
RER lines (RATP and SNCF)
Ile-de-France bus lines (RATP and OPTILE), except those circulating on Jetbus, Allobus Roissy CDG, tourist excursion and Air France networks
the Montmartre funicular
NB : Paris Visite is valid from the first day it is used to the end of the last day of the pass chosen (1, 2, 3 or 5 consecutive days). The day begins at 5.30am and finishes at 5.30am the following day.
https://en.parisinfo.com/what-to-see-in-paris/paris-pass/transport-travel-card-paris-visite
Вот ещё
How does the Paris Visite TravelCard work ?
The actual card is a little white ticket. Your Paris Visite travel card is valid from the first time you insert the ticket into the automatic barriers at the Metro/RER stations or when validating it on the buses. From this point on the card is valid for the number of calendar days printed on the card. Each day begins at 05:30 and ends at 05:30 the following day, so if you start to use, for example, your three day card at 12:30 on a Thursday, your card will be valid until 5:30 on Sunday morning.
https://www.helloparis.co.uk/content/6-frequently-asked-questions
Я тоже верю в первую очередь сайту RATP, но уже было замечено, что порой и там информация меняется. Если б ещё сам не слышал про такое, а тут уже на двух сайтах нашёл, а сайт https://www.parisinfo.com достаточно известный.
Но в то же время не исключаю, что может на данный момент и поменялось опять что-то.