Buying JR pass 6 months in advance

Hi everyone,

I am currently planning our trip to Japan in March 2024. I’d like to purchase the 21-day JR Pass in advance now.

The FAQs indicate that I can purchase the JR Pass up to 180 days (6 months) in advance. However, when I proceed with the booking, the ‘Date of Use’ was only available until 27/12/2023.

Is there anyway we can make the purchase this early in advance?

Thank you kindly,

Cris.