Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 3 26.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 03/27/2020   16:50:04   (  70.84, -76.23) 03/27/2020   16:51:15  (  70.71, -75.65)   25.49                71
 03/27/2020   17:40:41   ( -70.48,  91.67) 03/27/2020   17:40:47  ( -70.49,  91.66)    1.44                 6
 03/27/2020   18:31:24   (  70.36,-100.83) 03/27/2020   18:30:14  (  70.39,-100.85)    2.90                70
 03/30/2020   09:06:30   (  70.93,  39.53) 03/30/2020   09:07:41  (  70.79,  40.35)   33.72                71
 03/30/2020   09:57:06   ( -70.52,-152.48) 03/30/2020   09:57:14  ( -70.52,-152.42)    2.10                 8
 03/30/2020   10:47:49   (  70.40,  15.02) 03/30/2020   10:46:41  (  70.41,  15.06)    1.80                68
 04/02/2020   01:22:56   (  71.02, 155.28) 04/02/2020   01:24:06  (  70.92, 156.43)   43.04                70
 04/02/2020   02:13:30   ( -70.50, -36.55) 04/02/2020   02:13:42  ( -70.49, -36.59)    2.28                12
 04/02/2020   03:04:13   (  70.38, 130.95) 04/02/2020   03:03:09  (  70.37, 130.89)    2.70                64
 04/04/2020   17:39:21   (  71.11, -88.97) 04/04/2020   17:40:30  (  71.04, -87.50)   53.50                69
 04/04/2020   18:29:53   ( -70.49,  79.38) 04/04/2020   18:30:08  ( -70.50,  79.32)    2.90                15
 04/04/2020   19:20:37   (  70.42,-113.21) 04/04/2020   19:19:34  (  70.44,-113.13)    3.49                63
 04/07/2020   09:55:47   (  71.20,  26.78) 04/07/2020   09:56:56  (  71.11,  28.48)   62.12                69
 04/07/2020   10:46:18   ( -70.53,-164.78) 04/07/2020   10:46:35  ( -70.52,-164.78)    1.14                17
 04/07/2020   11:37:01   (  70.41,   2.72) 04/07/2020   11:36:02  (  70.40,   2.69)    1.95                59