Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 10 3.  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)
 10/04/2020   01:17:46   (  70.64, 157.68) 10/04/2020   01:18:38  (  70.65, 157.63)    1.67                52
 10/04/2020   02:08:27   ( -70.54, -34.84) 10/04/2020   02:08:08  ( -70.53, -34.90)    2.64                19
 10/04/2020   02:58:55   (  69.59, 133.94) 10/04/2020   02:57:49  (  69.66, 131.50)   94.83                66
 10/06/2020   17:34:09   (  70.67, -86.45) 10/06/2020   17:35:07  (  70.67, -86.44)    0.37                58
 10/06/2020   18:24:50   ( -70.57,  81.04) 10/06/2020   18:24:37  ( -70.56,  81.02)    0.83                13
 10/06/2020   19:15:23   (  69.88,-110.58) 10/06/2020   19:14:14  (  69.91,-112.28)   64.83                69
 10/09/2020   09:50:31   (  70.71,  29.41) 10/09/2020   09:51:35  (  70.70,  29.47)    2.46                64
 10/09/2020   10:41:12   ( -70.60,-163.09) 10/09/2020   10:41:05  ( -70.59,-163.06)    1.39                 7
 10/09/2020   11:31:49   (  70.12,   4.96) 10/09/2020   11:30:38  (  70.15,   3.95)   38.38                71
 10/12/2020   02:06:53   (  70.69, 145.36) 10/12/2020   02:08:05  (  70.66, 145.30)    3.10                72
 10/12/2020   02:57:35   ( -70.62, -47.22) 10/12/2020   02:57:34  ( -70.61, -47.14)    3.04                 1
 10/12/2020   03:48:16   (  70.37, 120.50) 10/12/2020   03:47:03  (  70.40, 120.18)   12.18                73
 10/14/2020   18:23:20   (  70.93, -99.13) 10/14/2020   18:24:31  (  70.85, -98.54)   23.48                71
 10/14/2020   19:13:57   ( -70.60,  68.74) 10/14/2020   19:14:04  ( -70.58,  68.69)    2.70                 7
 10/14/2020   20:04:41   (  70.51,-123.81) 10/14/2020   20:03:30  (  70.52,-123.75)    2.80                71