The Xi'an Satellite Control Center will exercise an north-south orbital control to FY- 4B from 9:15 to 14:00  March 20, 2025(UTC). During the period, ground receiving stations shall cease to receive the cloud imageries sent by FY- 4B from 9:15 to 14:00(UTC). Under a normal circumstance, the imageries’ positioning accuracy will see some bias within 24 hours after the orbital control. Please forgive the inconvenience caused.