I've just done it, for the 24th.
Are you sure that you put in the time correctly? Any chance that you were looking at a time when Switzerland would be asleep and you didn't change the time?
Here's the first of the day:
1 Station/Stop Time Platf./ Edge Travel with Occupancy Comments
Hide details for connection 1
Local area map: Chamonix-Mont-Blanc
Chamonix-Mont-Blanc dep 07:55 BUS26203
BUS
Bus 26203
Direction: Le Châtelard-Frontière
BE GROUPS: Transport limited BICYCLES: No self-service loading by sender PL
Local area map: Le Châtelard-Frontière
Le Châtelard-Frontière arr 08:34
Local area map: Le Châtelard-Frontière
Le Châtelard-Frontière dep 08:50 R 26203
R
Regio 26203
Direction: Martigny
2nd class only
Local area map: Martigny
Martigny arr 09:35 40
Local area map: Martigny
Martigny dep 09:40 2 IR 1809
IR
InterRegio 1809
Direction: Brig
Local area map: Visp
Visp arr 10:24 6
Local area map: Visp
Visp dep 10:57 5 IC 817
IC
InterCity 817
Direction: Romanshorn
Restaurant Minibar Family Coach with play area BZ RZ Reservation possible
Local area map: Spiez
Spiez arr 11:24 4
Local area map: Spiez
Spiez dep 11:33 1 IC 965
IC
InterCity 965
Direction: Interlaken Ost
Restaurant FZ BZ RZ Reservation possible
Local area map: Interlaken Ost
Interlaken Ost arr 11:57 5
Local area map: Interlaken Ost
Interlaken Ost dep 12:05 2 R 159
R
Regio 159
Direction: Lauterbrunnen
Local area map: Lauterbrunnen
Lauterbrunnen arr 12:25 3
Local area map: Lauterbrunnen
Lauterbrunnen
walk
walk
3 min., Y
Local area map: Lauterbrunnen BLM
Lauterbrunnen BLM
Local area map: Lauterbrunnen BLM
Lauterbrunnen BLM dep 12:31 R 759
R
Regio 759
Direction: Mürren BLM