Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 12 20.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(AQUA) AQUA Lat/Lon    Distance(km)  Time Diff(sec)
 12/22/2021   09:44:30   (  71.89,  31.71) 12/22/2021   09:44:49  (  71.89,  31.73)    0.77                19
 12/22/2021   10:34:18   ( -68.91,-156.19) 12/22/2021   10:33:20  ( -68.92,-156.22)    1.25                58
 12/25/2021   01:11:36   ( -71.75, -19.81) 12/25/2021   01:11:49  ( -71.75, -19.80)    0.44                13
 12/25/2021   02:01:36   (  69.32, 151.45) 12/25/2021   02:00:32  (  69.32, 151.49)    1.71                64
 12/27/2021   16:38:50   (  71.92, -71.89) 12/27/2021   16:38:57  (  71.91, -71.83)    2.30                 7
 12/27/2021   17:28:37   ( -68.87, 100.32) 12/27/2021   17:27:27  ( -68.87, 100.31)    0.10                70
 12/30/2021   07:19:12   (  81.05,  18.44) 12/30/2021   07:20:25  (  81.51,  19.29)   53.80                73
 12/30/2021   08:05:48   ( -71.31,-122.55) 12/30/2021   08:05:49  ( -71.31,-122.59)    1.43                 1
 12/30/2021   08:54:07   (  63.36,  54.56) 12/30/2021   08:52:54  (  63.32,  54.18)   19.77                73
 01/01/2022   22:42:48   ( -73.11,  14.82) 01/01/2022   22:44:00  ( -73.12,  14.75)    2.64                72