Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 1 13.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 01/15/2021   18:09:40   ( -69.32,  87.05) 01/15/2021   18:10:40  ( -69.31,  87.06)    1.14                60
 01/15/2021   19:00:24   (  69.20,-105.47) 01/15/2021   19:00:07  (  69.20,-105.43)    1.51                17
 01/15/2021   19:50:55   ( -68.57,  62.71) 01/15/2021   19:49:45  ( -68.65,  61.50)   49.79                70
 01/18/2021   10:26:01   ( -69.32,-157.02) 01/18/2021   10:27:08  ( -69.30,-157.07)    3.12                67
 01/18/2021   11:16:45   (  69.20,  10.45) 01/18/2021   11:16:35  (  69.19,  10.43)    1.70                10
 01/18/2021   12:07:21   ( -68.84, 178.27) 01/18/2021   12:06:08  ( -68.91, 177.71)   23.78                73
 01/21/2021   02:42:22   ( -69.38, -41.18) 01/21/2021   02:43:34  ( -69.34, -41.14)    4.79                72
 01/21/2021   03:33:05   (  69.21, 126.37) 01/21/2021   03:33:01  (  69.23, 126.36)    1.98                 4
 01/21/2021   04:23:45   ( -69.06, -66.10) 01/21/2021   04:22:32  ( -69.07, -66.21)    4.55                73
 01/23/2021   18:58:47   ( -69.60,  74.43) 01/23/2021   18:59:59  ( -69.49,  74.94)   23.33                72
 01/23/2021   19:49:27   (  69.27,-117.79) 01/23/2021   19:49:28  (  69.26,-117.72)    3.16                 1
 01/23/2021   20:40:07   ( -69.12,  49.74) 01/23/2021   20:38:59  ( -69.10,  49.71)    2.57                68
 01/26/2021   11:15:12   ( -69.82,-169.96) 01/26/2021   11:16:22  ( -69.74,-168.84)   44.13                70
 01/26/2021   12:05:47   (  69.23,  -1.80) 01/26/2021   12:05:56  (  69.23,  -1.87)    2.82                 9
 01/26/2021   12:56:28   ( -69.13, 165.66) 01/26/2021   12:55:26  ( -69.13, 165.63)    1.15                62