Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 10 5.  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)
 10/06/2020   17:34:09   (  70.68, -86.46) 10/06/2020   17:35:07  (  70.66, -86.46)    1.38                58
 10/06/2020   18:24:50   ( -70.57,  81.03) 10/06/2020   18:24:37  ( -70.55,  81.01)    2.49                13
 10/06/2020   19:15:22   (  69.83,-110.51) 10/06/2020   19:14:14  (  69.90,-112.29)   68.64                68
 10/09/2020   09:50:31   (  70.71,  29.41) 10/09/2020   09:51:35  (  70.69,  29.45)    2.95                64
 10/09/2020   10:41:12   ( -70.60,-163.10) 10/09/2020   10:41:05  ( -70.58,-163.08)    2.50                 7
 10/09/2020   11:31:49   (  70.13,   4.96) 10/09/2020   11:30:38  (  70.14,   3.93)   38.85                71
 10/12/2020   02:06:53   (  70.69, 145.36) 10/12/2020   02:08:04  (  70.70, 145.36)    1.90                71
 10/12/2020   02:57:34   ( -70.57, -47.14) 10/12/2020   02:57:34  ( -70.60, -47.17)    3.01                 0
 10/12/2020   03:48:15   (  70.32, 120.58) 10/12/2020   03:47:03  (  70.38, 120.16)   17.28                72
 10/14/2020   18:23:20   (  70.93, -99.13) 10/14/2020   18:24:31  (  70.83, -98.57)   23.33                71
 10/14/2020   19:13:57   ( -70.60,  68.74) 10/14/2020   19:14:03  ( -70.61,  68.74)    1.61                 6
 10/14/2020   20:04:41   (  70.51,-123.81) 10/14/2020   20:03:30  (  70.50,-123.78)    1.15                71
 10/17/2020   10:39:47   (  71.17,  16.38) 10/17/2020   10:40:56  (  71.05,  17.67)   48.29                69
 10/17/2020   11:30:20   ( -70.63,-175.39) 10/17/2020   11:30:32  ( -70.62,-175.36)    1.11                12
 10/17/2020   12:21:03   (  70.49,  -7.86) 10/17/2020   12:19:59  (  70.51,  -7.88)    2.78                64