Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 6 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)
 06/23/2019   02:39:59   (  69.43, 138.37) 06/23/2019   02:38:53  (  69.44, 135.86)   98.27                66
 06/25/2019   17:15:18   (  70.55, -82.06) 06/25/2019   17:16:10  (  70.53, -82.00)    3.15                52
 06/25/2019   18:05:59   ( -70.41,  85.48) 06/25/2019   18:05:40  ( -70.42,  85.46)    1.61                19
 06/25/2019   18:56:28   (  69.54,-105.89) 06/25/2019   18:55:21  (  69.55,-108.12)   86.74                67
 06/28/2019   09:31:45   (  70.55,  33.83) 06/28/2019   09:32:40  (  70.52,  33.86)    3.24                55
 06/28/2019   10:22:26   ( -70.40,-158.62) 06/28/2019   10:22:10  ( -70.41,-158.66)    2.41                16
 06/28/2019   11:12:56   (  69.59,   9.92) 06/28/2019   11:11:49  (  69.65,   7.89)   78.71                67
 07/01/2019   01:48:10   (  70.49, 149.80) 07/01/2019   01:49:09  (  70.51, 149.73)    3.29                59
 07/01/2019   02:38:52   ( -70.39, -42.72) 07/01/2019   02:38:39  ( -70.40, -42.80)    3.19                13
 07/01/2019   03:29:24   (  69.69, 125.65) 07/01/2019   03:28:16  (  69.75, 123.91)   67.43                68
 07/03/2019   18:04:38   (  70.54, -94.40) 07/03/2019   18:05:38  (  70.55, -94.33)    2.51                60
 07/03/2019   18:55:20   ( -70.43,  73.09) 07/03/2019   18:55:08  ( -70.45,  73.15)    2.46                12
 07/03/2019   19:45:53   (  69.79,-118.62) 07/03/2019   19:44:44  (  69.84,-120.08)   56.27                69
 07/06/2019   10:21:05   (  70.54,  21.49) 07/06/2019   10:22:08  (  70.53,  21.52)    1.46                63
 07/06/2019   11:11:47   ( -70.43,-171.02) 07/06/2019   11:11:38  ( -70.43,-170.99)    0.81                 9
 07/06/2019   12:02:22   (  69.90,  -2.89) 07/06/2019   12:01:12  (  69.93,  -4.06)   45.20                70