November 15, 2023
A part of our homepage service will be suspended from 0300 UT on Dec. 16 until 0300 UT on Dec. 18 because of system maintenance. This dates and times may vary back and forth.
Outage services: download of all contents including real-time, web browser version, hand-made globe sheets, "Today's Planet and Moon Position" information, etc.
June 10, 2019
A new English/Chinese version is available.
July 18, 2016
Menu program for PC version
Dec. 5, 2010
English pages were renewed.