On September 27th at 03:23 UTC, China launched two environmental observation satellites onboard a Long March-4B.

Huanjing-2A and 2B were sent to orbit from Launch Complex 9 in Taiyuan Satellite Launch Center.  According to the China Academy of Space Technology (CAST), HJ-2A and HJ-2B will provide 16-meter multispectral and 48-meter hyperspectral and infrared image data.

The mission patch features the Long March-4B in the foreground, with trees, water, and land — typical imagery found other mission patches from satellites with similar missions — and the two satellites shown in the background.

More Information

Spaceflight Now article 

CASC press release