Does anyone know about the validity of mobilis day tickets? We should be arriving in Paris 18h56 and leaving next day 18h55 (by train) Will we need just one ticket each to cover us for the 24 hours or will the first evening's expire by morning? There is some info on mobilis on the ratp website but their English version doesn't seem to mention it. We don't plan extensive travel, so we could just buy a carnet or 2 between the 3 of us.

It isn't a 24-hour ticket, it's for a calendar day.

You can probably get buy on a carnet.

<i>Mobilis</i> and the other &quot;day&quot; products expire when the trains stop running (around 1h30 the next day). So you would need some kind of ticketing for two days.

http://www.transport-idf.com/frontal...itresTransport

Thanks to all you francophiles - but I am pretty sure that if you buy (or rather, first use) a mobilis after midnight it continues to be valid the next working day, which of course would actually be the same day. In other words you write on the new date, so it stays valid. Nearly did this last year when we arrived in gare du nord about 11pm, but decided (wisely) to go straight to bed instead. Anyway, it'll be June, we are fit, we can walk &amp; enjoy the streets!

That's not my reading of the RATP page covering the Mobilis:

Ce titre de transport est valable pour une journ&eacute;e pendant les heures de service (entre 5h30 et 1h environ). La journ&eacute;e enti&egrave;re est d&eacute;compt&eacute;e quelle que soit l'heure de d&eacute;but d'utilisation pendant les heures de service (entre 5h30 et 1h environ). Exemple : <b>lors de votre premi&egrave;re utilisation , si vous validez entre minuit et 1h environ, la journ&eacute;e pr&eacute;c&eacute;dente est d&eacute;compt&eacute;e.</b>

That last clause says &quot;upon your first use, if you validate between approximately midnight and 1AM, the previous day is deducted.&quot;

So what you are contemplating doing will cost you 5,60&euro; for one ride.

Thanks for putting me straight on that one Robespierre, I misunderstood the word d&eacute;compt&eacute;e