What this is
How long each yearly regulation mark stayed legal in Japanese Standard play: about 3.1 years for E and F, and 3.0 years for G, with three marks legal at once.
How it’s built
- Subtracted the date each mark was first printed from the date it rotated out of Japanese Standard, using TPC's rotation notices.
What we assumed
Nothing. The figure is used as published.
Sanity check
Example: G entered with the January 2023 sets and left Standard on 23 January 2026, 1,099 days later.
Where it comes from
Our calculation from other figures in the trainer’s notes.
Show the working
- 2024-01-26 minus 2020-12-04 = 1148 d
- 2025-01-24 minus 2021-12-17 = 1134 d
- 2026-01-23 minus 2023-01-20 = 1099 d