An on-orbit upgrade and maintenance operation of BDS-3 MEO-24 satellite, BDS-3 MEO-26 satellite, and BDS-3 GEO-1 satellite will be carried out from 20 April 2026. According to the maintenance process, a single satellite will be set to be unusable for about 4 hours. 

As for BDS-3 MEO-24 satellite, the detailed duration is from UTC 20 April 2026, 23:00, to UTC 21 April 2026, 03:00; as for BDS-3 MEO-26 satellite, the detailed duration is from UTC 21 April 2026, 04:00, to UTC 21 April 2026, 08:00; as for BDS-3 GEO-1 satellite, the detailed duration is from UTC 21 April 2026, 08:00, to UTC 21 April 2026, 12:00.