Old Japanese Clock

Old Japanese Clock

Life with Various Hour Systems

1 ratings
8 reviews
$3.99

Details

Released
April 18, 2014
Updated
November 8, 2026

Features

Old Japanese Clock screenshot #1 for iPhone
Old Japanese Clock screenshot #2 for iPhone
Old Japanese Clock screenshot #3 for iPhone
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About

This application converts between modern time and various traditional Japanese timekeeping systems, including fixed and temporal hour systems. It is useful for historical research, clock adjustments, and recreating historical lifestyles.

✓Converts modern to traditional Japanese time
✓Supports fixed hour systems (Engishiki, Guchureki, etc.)
✓Supports temporal hour systems (Temporeki, Koten, etc.)
✓Includes widgets
✓Useful for historical document research
✓Aids in adjusting Japanese clocks (Wadokei)
Show original description
+2

What's New in Old Japanese Clock

1.13.7

November 8, 2026

- Fixed bugs.

User reviews

最近通知が⁉︎

なんか通知が出ないのがどう言うこと?

余計なことしないでください

地図から緯度経度をノルウェー北部にしたところ、起動すらせずにクラッシュして使えません!
緯度経度の正当処理やチェックができないのなら、機能廃止してください!
まったく使い物になりません!
更新する毎、改悪過ぎです!!!

Response from developer

(追記10/9)7/3公開バージョン(v1.9.7)以降は一括換算も高緯度対応していますのでお試しください。(初回7/2)一括換算使用時に高緯度(夜明け・日暮れがない場所)でも強制終了しないバージョンを申請中ですのでしばらくお待ちください。

フォントが・・・

(更新)
和風のフォントを選んで表示できると良いのですが。

Response from developer

(追記10/22)「明朝体」スイッチをオンにしてください。和風か否かについて議論の余地はあります。 (初回20/11/30)「イケてる」の意味がよく分かりません。具体的に記していただくと対応が迅速かつ容易になります。できればサポートにメールいただければと思います。

Chime doesn’t work properly!

Chime doesn’t work properly. If it’s 0 or 12 o’clock, it dings 9 times properly. But it dings only 4 times for all the other times. I live in U.K. and set my location in U.K. properly in your map setting or local time. If it’s a bug, please fix ASAP!

Response from developer

This app uses old Japanese time systems in the Edo era. If you use fixed hour systems, temple bell rings 9 times at 11 a.m. and 11 p.m., 8 times at 1 a.m. and 1 p.m., 7 times at 3 a.m. and 3 p.m., 6 times at 5 a.m. and 5 p.m., 5 times at 7 a.m. and 7 p.m., 4 times at 9 a.m. and 9 p.m. Please check “Hour Systems Info”.

時代劇には必需品

歴史物には時刻が欠かせない。丑三つ時 時そば 鬼平犯科帳 遡って平将門 時刻が分からないと 理解出来ない。月齢と時刻 すべて歩いていた時代 月明かりが無ければ 夜這いも出来ない。

Developer apps

FAQ

What is the Old Japanese Clock app?

The Old Japanese Clock app converts modern time into various traditional Japanese timekeeping systems, including fixed and temporal hour systems. It is designed for users interested in Japanese history and traditional methods of time measurement.

What traditional Japanese time systems does Old Japanese Clock support?

The app supports six fixed hour systems: Engishiki, Guchureki, Semmyoreki, Semi-Engishiki, Kanagoyomi, and Shichiyoreki. It also supports seven temporal hour systems: Temporeki, Koten, Shaku-Sun-Bu (Class 1 and 2), and Three-Divided (Class 1 to 3).

Is Old Japanese Clock available on Android?

Based on the provided data, Old Japanese Clock is available on iPhone, iPad, and iPod. Support for Android devices is not specified in this information.

How often is Old Japanese Clock updated?

The latest version of Old Japanese Clock is 1.13.7, last updated on November 8, 2026. This indicates a recent update, suggesting the app is actively maintained.

What is the price of Old Japanese Clock?

Old Japanese Clock is a paid application priced at $3.99. There are no mentions of free trials or subscription tiers for this app.

Does Old Japanese Clock have ads?

No, Old Japanese Clock does not contain advertisements. The app is a paid download and is ad-free.

What is the age rating for Old Japanese Clock?

Old Japanese Clock has an age rating of 4+. This means it is suitable for children aged 4 and above, with no mature content.

What do users like about Old Japanese Clock?

While specific user sentiment details are not provided, the app has a perfect 5.0-star rating from one review. This suggests a highly positive initial reception for its functionality.