Chlonology

1906
Seikei-en, a small informal school, is founded by Mr. Haruji Nakamura (1877-1924). Over the next 21 years, Seikei-en expands and gradually develops into a group of schools consisting of an elementary school, a boys' high school,a girls' high school, and a technical training school. .
1925
The High school for boys becomes a seven-year high school. Mr.Tokichi Kato ( 1887-1972) arrived at science teacher from the No.5 Tokyo Meteropolotan High School. He started to the meteorological observation with his students.
The first weather station near "Rika-kan" :Left
and Mr, T, Kato :Right

His nickname is "acorn"
1926
Mr, Kato started to his official meteorological observation in the course of science education. This was forerunner as present Seikei Meteorological Observatory. His meteorological measurements were taken every day at 10:00 JST. The first data report "Kisho-Kansoku Houkoku" was published.
1936
The 10'th anniversary volume of data report was published.
1942
The Tokyo Meteorological Observatory (TMO) designated the Seikei weather station as "Kichijoji Observatory".
1953
The meteorological measurements time changed to 9:00 JST.
1959
The Seikei Meteorological Observatory was established
.
The second weather station near the junior high school.: Left
and The present weather station : Right


1963
Visibility observation of the Tokyo-Tower and Mt. Fuji was started.
1968
Dr. Miho Daigo ( -2000) arrived at the head of observatory.
1972
Mr. T. Kato passed away.
1976
Mr. Nobuo Uchida arrived at the head of observatory. The "Kichijoji Observatory" fisnished the observation on commission.
1982
The year report as "Seikei Kisho Kansokujo Hokoku" was obtained the ISSN number (0388-3515).
1983
Dr. Yoshimasa Kurashige was arrived at the head of observatory.
1992
Acidity of rain measurement was started.
1998
The automated meteorological data acquisition system (OTAC-2000 Weather Computer System :made in Ohta Keiki Seisakusho) was put onto operation.
2000
Seikei Meteorological Observatory Homepage was opened.
2002
Electric conductivity of rain measurment was started.
Real time data publication on the web was started.