I'll be needing to catch the RER B line from CDG airport (Paris) around 8:00 AM on a Sunday morning. Does the RER B line run regularly on a Sunday morning?
Thanks.
You can look it up on http://www.ratp.fr/en/
which contains lots of info that might come in handy while you are there.
Aldo, You might find it helpful to have a look at the excellent Paris By Train website. I'm sure the RER will have runs at 08:00 even on a Sunday morning. You'll likely have to visit the staffed ticket office to buy tickets, as the Kiosks accept ONLY Chip & PIN credit cards or Euro coins. Happy travels!
On Sundays the first RER B train departs from CDG 2 TGV at 04:51. Trains depart from CDG 2 TGV at 07:51, 08:00, 08:06, 08:15, 08:21, 08:30, 08:36, 08:45, and 08:51. To avoid standing in line at a ticket office, get euros from an ATM and use a change machine to get coins.