I am french. My grandfather ate cats during the war not to starve (authentic). Beware, I'm a good grandson. Get your chainmail fur, catgirl.
France has plenty of time zones because it still owns a great number of small parts of its former empire. If you count the most unlikely rocks in the sea like Clipperton or the Kerguelen, I'm pretty sure you can reach 12 time zones. That being said, not all of them are used by great numbers :
UTC-4 (Guadeloupe, Martinique)
UTC-3 (Cayenne, Saint-Pierre et Miquelon)
UTC+1 (mainland)
UTC+3 (Mayotte)
UTC+4 (Réunion)
UTC+10 (Polynesia)
UTC+11 (New Caledonia)
UTC+12 (Wallis & Futuna).
That's the parts with airports, and we already have 8 of them. Clipperton is at UTC-8, the Kerguelen are UTC+5, some parts of Polynesia are at at UTC+9 or +9:30, and bingo, you have our 12 time zones.
Ah, and I don't p*** off the quebecois, catgirls are far more funny to bully.