Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 3 30.  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)
 03/30/2020   09:06:30   (  70.93,  39.52) 03/30/2020   09:07:41  (  70.78,  40.33)   34.22                71
 03/30/2020   09:57:06   ( -70.52,-152.49) 03/30/2020   09:57:14  ( -70.50,-152.45)    2.87                 8
 03/30/2020   10:47:49   (  70.40,  15.01) 03/30/2020   10:46:41  (  70.40,  15.04)    1.30                68
 04/02/2020   01:22:56   (  71.02, 155.28) 04/02/2020   01:24:06  (  70.91, 156.41)   42.85                70
 04/02/2020   02:13:30   ( -70.51, -36.56) 04/02/2020   02:13:41  ( -70.52, -36.54)    2.21                11
 04/02/2020   03:04:13   (  70.39, 130.94) 04/02/2020   03:03:08  (  70.41, 130.95)    3.25                65
 04/04/2020   17:39:22   (  71.11, -88.96) 04/04/2020   17:40:31  (  71.03, -87.52)   52.76                69
 04/04/2020   18:29:55   ( -70.54,  79.29) 04/04/2020   18:30:08  ( -70.54,  79.37)    2.83                13
 04/04/2020   19:20:38   (  70.42,-113.21) 04/04/2020   19:19:35  (  70.43,-113.15)    2.18                63
 04/07/2020   09:55:47   (  71.19,  26.79) 04/07/2020   09:56:56  (  71.09,  28.46)   60.97                69
 04/07/2020   10:46:18   ( -70.52,-164.77) 04/07/2020   10:46:35  ( -70.50,-164.81)    2.79                17
 04/07/2020   11:37:01   (  70.40,   2.73) 04/07/2020   11:36:02  (  70.38,   2.66)    3.24                59
 04/10/2020   02:12:14   (  71.33, 142.46) 04/10/2020   02:13:21  (  71.21, 144.52)   75.07                67
 04/10/2020   03:02:42   ( -70.50, -48.84) 04/10/2020   03:03:02  ( -70.51, -48.92)    2.89                20
 04/10/2020   03:53:26   (  70.44, 118.58) 04/10/2020   03:52:28  (  70.44, 118.63)    2.18                58
 04/12/2020   18:28:40   (  71.42,-101.79) 04/12/2020   18:29:46  (  71.32, -99.42)   85.02                66
 04/12/2020   19:19:07   ( -70.54,  67.01) 04/12/2020   19:19:29  ( -70.51,  66.97)    3.26                22
 04/12/2020   20:09:50   (  70.42,-125.49) 04/12/2020   20:08:55  (  70.45,-125.48)    2.99                55