The Xi'an Satellite Control Center is to carry out east-west station keeping for FY-2G 7:30 to 8:30 December 12, 2017 (UTC), FY-2G data service will be influenced during this time.  There is no FY-2G data at 8:00(UTC). Possible bias found with imagery positioning within 24 hours after a station keeping operation, we apologize for the inconvenience due to it.