| The 23rd Japanese Olympiad in Informatics Spring Training (JOIST 2023/2024) Day 1 | 2026-01-22 11:00:01 |
| The 24th Japanese Olympiad in Informatics Spring Training (JOIST 2024/2025) Day 4 | 2026-01-21 11:01:05 |
| The 24th Japanese Olympiad in Informatics Spring Training (JOIST 2024/2025) Day 2 | 2025-10-28 11:11:31 |
| Central European Olympiad in Informatics 2018 Day 2 (CEOI 2018 Day 2) | 2025-09-24 12:35:31 |
| Central European Olympiad in Informatics 2018 Day 1 (CEOI 2018 Day 1) | 2025-09-23 10:52:56 |
| Central European Olympiad in Informatics 2020 Day 2 (CEOI 2020 Day 2) | 2025-09-22 12:57:21 |
| Central European Olympiad in Informatics 2020 Day 1 (CEOI 2020 Day 1) | 2025-09-19 13:15:32 |
| Central European Olympiad in Informatics 2025 Day 2 (CEOI 2025 Day 2) | 2025-09-18 12:45:32 |
| Central European Olympiad in Informatics 2025 Day 1 (CEOI 2025 Day 1) | 2025-09-17 11:04:11 |
| Central European Olympiad in Informatics 2024 Day 1 (CEOI 2024 Day 1) | 2025-09-17 10:34:51 |
| Central European Olympiad in Informatics 2022 Day 2 (CEOI 2022 Day 2) | 2025-09-16 13:21:53 |
| Central European Olympiad in Informatics 2022 Day 1 (CEOI 2022 Day 1) | 2025-09-12 12:27:59 |
| Central European Olympiad in Informatics 2021 Day 1 (CEOI 2021 Day 1) | 2025-09-11 14:21:41 |
| Balkan Olympiad in Informatics 2023 Day 2 | 2025-09-10 13:18:29 |
| Balkan Olympiad in Informatics 2023 Day 1 | 2025-09-09 12:10:33 |
| Baltic Olympiad in Informatics 2025 Day 2 | 2025-07-07 10:35:25 |
| Baltic Olympiad in Informatics 2025 Day 1 | 2025-07-06 10:38:38 |
