Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 12 21.  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,  31.70) 12/22/2021   09:44:49  (  71.89,  31.72)    0.80                19
 12/22/2021   10:34:18   ( -68.92,-156.20) 12/22/2021   10:33:20  ( -68.92,-156.22)    1.22                58
 12/25/2021   01:11:36   ( -71.76, -19.81) 12/25/2021   01:11:49  ( -71.76, -19.81)    0.36                13
 12/25/2021   02:01:36   (  69.33, 151.45) 12/25/2021   02:00:32  (  69.32, 151.49)    1.64                64
 12/27/2021   16:38:50   (  71.92, -71.89) 12/27/2021   16:38:57  (  71.91, -71.84)    2.07                 7
 12/27/2021   17:28:37   ( -68.87, 100.31) 12/27/2021   17:27:27  ( -68.88, 100.31)    0.29                70
 12/30/2021   07:19:08   (  81.00,  19.92) 12/30/2021   07:20:21  (  81.45,  20.84)   52.81                73
 12/30/2021   08:05:47   ( -71.26,-122.46) 12/30/2021   08:05:48  ( -71.26,-122.51)    1.88                 1
 12/30/2021   08:54:03   (  63.14,  54.76) 12/30/2021   08:52:50  (  63.10,  54.36)   20.53                73
 01/01/2022   22:42:58   ( -73.61,  13.69) 01/01/2022   22:44:09  ( -73.60,  13.75)    2.21                71