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UID:4497@unesco-school.mext.go.jp
DTSTART;TZID=Asia/Tokyo:20270314T000000
DTEND;TZID=Asia/Tokyo:20270314T235900
DTSTAMP:20250909T011317Z
URL:https://www.unesco-school.mext.go.jp/events/%e3%80%8c%e5%9b%bd%e9%9a%9
 b%e6%95%b0%e5%ad%a6%e3%83%87%e3%83%bc%e3%80%8d-2021-03-14-2022-03-14-2023-
 03-14-2024-03-14-2025-03-14-2026-03-14-2027-03-14/
SUMMARY:「国際数学デー」
DESCRIPTION:International Day of Mathematics
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