Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 3 23.  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)
 03/25/2020   00:33:38   (  70.72, 168.06) 03/25/2020   00:34:49  (  70.66, 168.40)   14.01                71
 03/25/2020   01:24:18   ( -70.52, -24.29) 03/25/2020   01:24:20  ( -70.50, -24.22)    3.53                 2
 03/25/2020   02:15:00   (  70.35, 143.29) 03/25/2020   02:13:48  (  70.33, 143.19)    3.96                72
 03/27/2020   16:50:04   (  70.81, -76.18) 03/27/2020   16:51:15  (  70.74, -75.60)   22.48                71
 03/27/2020   17:40:42   ( -70.50,  91.65) 03/27/2020   17:40:48  ( -70.47,  91.63)    3.04                 6
 03/27/2020   18:31:25   (  70.39,-100.86) 03/27/2020   18:30:15  (  70.36,-100.89)    2.85                70
 03/30/2020   09:06:29   (  70.90,  39.58) 03/30/2020   09:07:40  (  70.82,  40.40)   31.22                71
 03/30/2020   09:57:05   ( -70.48,-152.42) 03/30/2020   09:57:14  ( -70.50,-152.45)    2.06                 9
 03/30/2020   10:47:48   (  70.37,  15.07) 03/30/2020   10:46:41  (  70.38,  15.02)    2.18                67
 04/02/2020   01:22:56   (  71.04, 155.24) 04/02/2020   01:24:06  (  70.89, 156.39)   44.85                70
 04/02/2020   02:13:30   ( -70.52, -36.58) 04/02/2020   02:13:41  ( -70.52, -36.54)    1.47                11
 04/02/2020   03:04:13   (  70.41, 130.91) 04/02/2020   03:03:08  (  70.40, 130.93)    1.05                65
 04/04/2020   17:39:22   (  71.13, -89.01) 04/04/2020   17:40:31  (  71.02, -87.53)   54.70                69
 04/04/2020   18:29:54   ( -70.51,  79.35) 04/04/2020   18:30:09  ( -70.48,  79.29)    3.41                15
 04/04/2020   19:20:37   (  70.39,-113.16) 04/04/2020   19:19:35  (  70.42,-113.16)    2.54                62