The first Shinkansen

Hello,

We would like to leave Kyoto in order to go to Yudanaka via Tokyo. After checking HyperDia.com we saw that the first trains (from 6AM to 10AM) are Shinkansen Nozomi not available using the JR Pass. The first Shinkansen train that allows the use of the JR pass is the 10:30 AM.

We would like to confirm if we indeed are not able to use the JR Pass until the 10:30 train. We would prefer to take an earlier one but we wouldn't like to purchase an extra ticket out of the JR Pass.

Thank you I advance.
Jordi