On the web site http://www.wmo-sat.info/product-access-guide/
In particular, MTSAT imagery.
Note that some of the links need updating. Eg. MTSAT imagery, including heavy rainfall potential areas - http://mscweb.kishou.go.jp/notice/moved-en-index.html
On the web site http://www.wmo-sat.info/satellite-user-readiness/
In particular, Himawari-8 information
Please note that the link http://mscweb.kishou.go.jp/himawari89/index.html has changed