JIKANKEI displays angles of the SUN and local times of cities and places on the Earth. Sunrise and sunset data are taken from US Naval Observatory Date Services through Internet. The latest version shows Sun directions and FUJYO JIHOU (gradually changing time) that is before Westernized Japanese Clock System. FUJYO JIHOU divides daytime to six equal periods which an angular unit to 30 degrees is measured along the celestial equator. When it is equinox one of periods is almost two hours. However It is changed by seasons, summer time is longer and winter time is shorter. The each divided points were named to the 6 directions of zodiac symbols in day time and the 6 directions of symbols in evening, such as U (rabbit, sunrise: six gongs), TATSU (dragon, about two hours form sunrise: five gongs), MI (snake, about four hours from sunrise: four gongs), and so on. JIKANKEI also shows one twelfth of daytime and one twelfth of evening time for the understanding of differences between twenty fourth even divided modern clock system.
What's new in this version:
- Added 2 Nuclear Meltdown Places
- Fixed the Sun below horizon near the north pole.