Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 8 31.  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)
 08/31/2019   16:57:03   ( -70.48, 102.52) 08/31/2019   16:57:59  ( -70.47, 102.55)    1.37                56
 08/31/2019   17:47:47   (  70.36, -89.98) 08/31/2019   17:47:26  (  70.37, -89.96)    0.72                21
 08/31/2019   18:38:16   ( -69.63,  78.45) 08/31/2019   18:37:07  ( -69.66,  76.66)   69.13                69
 09/03/2019   09:13:29   ( -70.45,-141.54) 09/03/2019   09:14:29  ( -70.45,-141.60)    2.27                60
 09/03/2019   10:04:13   (  70.33,  25.96) 09/03/2019   10:03:56  (  70.35,  25.88)    2.98                17
 09/03/2019   10:54:44   ( -69.71,-165.77) 09/03/2019   10:53:35  ( -69.75,-167.33)   60.18                69
 09/06/2019   01:29:56   ( -70.48, -25.69) 09/06/2019   01:30:58  ( -70.49, -25.67)    1.62                62
 09/06/2019   02:20:39   (  70.36, 141.81) 09/06/2019   02:20:24  (  70.38, 141.81)    2.16                15
 09/06/2019   03:11:12   ( -69.84, -50.08) 09/06/2019   03:10:01  ( -69.89, -51.25)   45.38                71
 09/08/2019   17:46:21   ( -70.45,  90.24) 09/08/2019   17:47:27  ( -70.47,  90.18)    3.35                66
 09/08/2019   18:37:06   (  70.38,-102.35) 09/08/2019   18:36:54  (  70.35,-102.35)    3.44                12
 09/08/2019   19:27:40   ( -69.91,  65.70) 09/08/2019   19:26:29  ( -69.98,  64.75)   36.80                71
 09/11/2019   10:02:48   ( -70.47,-153.91) 09/11/2019   10:03:56  ( -70.50,-153.90)    2.86                68
 09/11/2019   10:53:32   (  70.36,  13.58) 09/11/2019   10:53:23  (  70.38,  13.58)    2.65                 9
 09/11/2019   11:44:09   ( -70.04,-178.61) 09/11/2019   11:42:56  ( -70.12,-179.17)   22.81                73