Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 3 6.  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)
 03/06/2020   06:38:45   (  70.52,  77.06) 03/06/2020   06:39:39  (  70.51,  77.03)    1.80                54
 03/06/2020   07:29:27   ( -70.43,-115.48) 03/06/2020   07:29:08  ( -70.45,-115.43)    2.44                19
 03/06/2020   08:19:56   (  69.57,  53.15) 03/06/2020   08:18:49  (  69.58,  50.98)   83.93                67
 03/08/2020   22:55:10   (  70.55,-167.09) 03/08/2020   22:56:06  (  70.57,-167.02)    2.91                56
 03/08/2020   23:45:52   ( -70.46,   0.38) 03/08/2020   23:45:36  ( -70.45,   0.45)    2.54                16
 03/09/2020   00:36:23   (  69.70, 168.85) 03/09/2020   00:35:14  (  69.74, 167.09)   68.19                69
 03/11/2020   15:11:34   (  70.53, -51.15) 03/11/2020   15:12:34  (  70.56, -51.14)    3.33                60
 03/11/2020   16:02:16   ( -70.43, 116.33) 03/11/2020   16:02:04  ( -70.45, 116.33)    2.29                12
 03/11/2020   16:52:49   (  69.79, -75.37) 03/11/2020   16:51:40  (  69.85, -76.89)   58.76                69
 03/14/2020   07:27:58   (  70.56,  64.71) 03/14/2020   07:29:01  (  70.55,  64.72)    1.19                63
 03/14/2020   08:18:40   ( -70.46,-127.81) 03/14/2020   08:18:31  ( -70.45,-127.80)    1.21                 9
 03/14/2020   09:09:15   (  69.92,  40.33) 03/14/2020   09:08:05  (  69.95,  39.13)   45.75                70
 03/16/2020   23:44:22   (  70.54,-179.36) 03/16/2020   23:45:29  (  70.54,-179.41)    2.10                67
 03/17/2020   00:35:04   ( -70.43, -11.87) 03/17/2020   00:34:59  ( -70.44, -11.93)    2.46                 5
 03/17/2020   01:25:42   (  70.06, 156.02) 03/17/2020   01:24:30  (  70.11, 155.23)   30.41                72
 03/19/2020   16:00:47   (  70.58, -63.51) 03/19/2020   16:01:56  (  70.58, -63.47)    1.48                69
 03/19/2020   16:51:29   ( -70.46, 103.99) 03/19/2020   16:51:26  ( -70.48, 104.01)    2.27                 3
 03/19/2020   17:42:08   (  70.15, -88.21) 03/19/2020   17:40:56  (  70.20, -88.75)   21.40                72