Train tickets - can't seem to find any to Chamonix or from Chamonix in September

Is it for this year?
I am getting results except on Saturdays September 14,21, 28

https://en.oui.sncf/en/calendar/FRPAR/FRXCF/20190901/20190928/2/26-NO_CARD?onlyDirectTrains=false&lang=en

https://www.thetrainline.com/book/results?journeySearchType=single&origin=69b59b70a73b72302eff45627aeef377&destination=af69cf79a1a5560fe0c2bddfb46552f1&outwardDate=2019-09-03T08%3A00%3A00&outwardDateType=departAfter&inwardDateType=departAfter&selectedTab=train&selectExactTime=true&lang=en&dpiCookieId=Y7BELE6Q9OSR2YPSBUJY9QR9L&selectedOutward=ivAeA64gctM%3D%3APJ1R6fK%2B%2FgQ%3D%3AStandard

By the way, Chamonix to Nice is one long ride, have you looked into shuttling/bussing/driving to Geneva and flying Geneva to Nice?

Yes it is for this year.

I must not be looking hard enough! Thanks!

I've traveled by train from Nice to Chamonix. And the time on the train was not bad!

Thank you.

This indicates that the line between St Gervais-les-Bains and Chamonix is under construction in September. There are a lot of trains between Paris and St Gervais-les-Bains. Check the bus service to Chamonix from there or from Geneva.

Hrm...maybe going to Geneva and then flying to Nice would be better...9 hour train ride! Must be different from Chamonix to Nice!

Aaaaah!!! Construction! Thank you!