Tenchi Koyomi
Discover Japan's traditional calendar culture
What can a calendar tell us about a culture?
In Japan, calendars have long been connected to the changing seasons, celebrations, and the tradition of choosing dates for important occasions. Behind those customs is koyomi—the Japanese calendar and almanac.
Tenchi Koyomi is a modern calendar inspired by these traditional ideas. We explore the history with curiosity and use our own contemporary interpretations to look at dates for everyday activities.
New to Japanese calendars? Start with our free guides:
- What Is Koyomi? Japan's Traditional Calendar and Seasonal Culture
- What Is Jūnichoku? Japan's Twelve Traditional Day Signs
- What Is Geppa? Month Break Days in Japan's Traditional Almanac
Curious about today's date?
Tenchi Koyomi's calendar currently appears in Japanese. It displays activity-specific results: ○ (suitable), × (better to avoid), and a blank (neither). These are Tenchi Koyomi's own interpretations, not promises or predictions. Calendar dates and times use Japan Standard Time (JST).