Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 2 4.  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)
 02/04/2020   23:19:56   (  68.82,-170.90) 02/04/2020   23:20:35  (  68.80,-170.96)    3.42                39
 02/05/2020   00:10:37   ( -68.72,  -3.45) 02/05/2020   00:10:04  ( -68.74,  -3.40)    2.72                33
 02/07/2020   15:36:21   (  68.82, -55.01) 02/07/2020   15:37:07  (  68.83, -55.05)    2.21                46
 02/07/2020   16:27:02   ( -68.72, 112.45) 02/07/2020   16:26:37  ( -68.73, 112.45)    0.48                25
 02/10/2020   07:52:47   (  68.88,  60.82) 02/10/2020   07:53:39  (  68.87,  60.86)    2.02                52
 02/10/2020   08:43:27   ( -68.72,-131.65) 02/10/2020   08:43:10  ( -68.71,-131.71)    2.47                17
 02/10/2020   09:33:57   (  67.85,  36.78) 02/10/2020   09:32:49  (  67.93,  35.00)   74.93                68
 02/13/2020   00:09:12   (  68.88, 176.71) 02/13/2020   00:10:12  (  68.85, 176.70)    3.32                60
 02/13/2020   00:59:53   ( -68.77, -15.81) 02/13/2020   00:59:42  ( -68.76, -15.79)    1.68                11
 02/13/2020   01:50:27   (  68.13, 152.34) 02/13/2020   01:49:17  (  68.19, 151.17)   48.86                70
 02/15/2020   16:25:36   (  68.88, -67.39) 02/15/2020   16:26:43  (  68.89, -67.39)    0.74                67
 02/15/2020   17:16:17   ( -68.76, 100.10) 02/15/2020   17:16:14  ( -68.74, 100.05)    2.88                 3
 02/15/2020   18:06:56   (  68.40, -92.11) 02/15/2020   18:05:44  (  68.45, -92.65)   23.20                72
 02/18/2020   08:42:03   (  68.99,  48.37) 02/18/2020   08:43:14  (  68.98,  48.59)    8.89                71
 02/18/2020   09:32:43   ( -68.81,-144.06) 02/18/2020   09:32:46  ( -68.78,-144.03)    3.09                 3
 02/18/2020   10:23:26   (  68.66,  23.44) 02/18/2020   10:22:13  (  68.66,  23.46)    0.97                73