Terms of Use / 利用規約

No guarantees

MIHARU pulls together real-time data from many public sources — disasters, transport, infrastructure, society, and defense — to give you a picture of what is happening in Japan. All information is provided as-is. We cannot guarantee it is always accurate, complete, or up to date.

本サービスは災害・交通・インフラ・社会・防衛に関する第三者データを集約したものであり、正確性・完全性・時宜性について一切の保証を行いません。

In an emergency

If there is an actual emergency, follow official sources: Japan Meteorological Agency (jma.go.jp), your local government, J-ALERT broadcasts, and police, fire, or coast guard channels. Do not rely on MIHARU alone for decisions about your safety.

緊急時には気象庁・自治体・Jアラート・警察／消防／海上保安庁等の公式情報を優先してください。本サービスを唯一の情報源として人命に関わる判断を行わないでください。

Data sources and their rules

Some of the data sources MIHARU uses have restrictions on commercial reuse:

• OpenSky Network — personal, non-commercial use only (this is the backup flight feed; the main feed is adsb.lol).
• NHK / NHK World — news headlines for personal use only; commercial republication is not allowed.
• Japan Times — news headlines for personal use only; commercial republication is not allowed.
• OpenStreetMap — used for shelters, police stations, military bases, and rail routes. You must credit "© OpenStreetMap contributors" if you reproduce this data.
• Wikipedia — used for the US Navy ships in Japan reference layer. Credit required; any derivatives must use the same license (CC BY-SA 4.0).
• Japan Coast Guard coastal data — must attribute the Japan Coast Guard as the source; not for navigation or operational decisions.
• Rail color palette — from mini-tokyo-3d by Akihiko Kusanagi, MIT license.
• Map tiles — powered by CARTO; subject to CARTO's terms of use.

All other sources — including NASA, Japan Meteorological Agency, Ministry of Defense press releases, government statistics agencies, and financial data providers — permit reuse under their own stated terms. If you build on or fork MIHARU, please check each source's rules before any commercial deployment.

US Navy ships layer

The US Navy ships on the map show the home port each vessel is assigned to — not their live location. Positions are shown near the port with a small offset so markers don't overlap. This layer is for general reference only and must not be used for navigation or any real-world operational decision. Source: Wikipedia "United States Seventh Fleet" article (CC BY-SA 4.0).

Coastal navigation data

Coastal information (lighthouses, cables, port zones, navigation notices) comes from the Japan Coast Guard. This display is not guaranteed by the Japan Coast Guard and must not be used for navigation or maritime operations.

Crime and incident locations

Crime and incident markers come from Safety Navi, which aggregates Tokyo Metropolitan Police and nationwide police bulletins. Locations are approximate — most are accurate to a neighborhood block, not an exact address. Treat all positions as estimates.

事件レイヤーは姉妹プロジェクト Safety Navi が提供する警視庁 + 全国都道府県警の公報集約データです。座標は街区（chome）ベースのものが大半で、報告地点そのものではありません。

Air defense zones

The air defense zone boundaries on the map are drawn from publicly available government announcements (Japan Ministry of Defense and China's 2013 declaration). The overlay includes Japan's zone, China's zone, and the area where they overlap. These boundaries are simplified for display purposes and must not be used for navigation, legal compliance, military planning, or any real-world decision.

防空識別圏オーバーレイは防衛省・自衛隊・中国国防部の公開発表に基づく手動キュレーションです。可視化目的に簡略化された座標であり、航行・法令遵守・軍事計画・運用判断には絶対に使用しないでください。

Changes

These terms may be updated without notice. Continuing to use MIHARU means you accept the current terms.

本規約は予告なく変更される場合があります。継続利用をもって変更に同意したものとみなします。