Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 7 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)
 07/03/2019   18:04:37   (  70.51, -94.34) 07/03/2019   18:05:38  (  70.54, -94.35)    2.99                61
 07/03/2019   18:55:19   ( -70.41,  73.13) 07/03/2019   18:55:08  ( -70.42,  73.11)    1.10                11
 07/03/2019   19:45:53   (  69.82,-118.65) 07/03/2019   19:44:43  (  69.88,-120.01)   53.00                70
 07/06/2019   10:21:04   (  70.51,  21.54) 07/06/2019   10:22:08  (  70.52,  21.51)    1.56                64
 07/06/2019   11:11:46   ( -70.41,-170.98) 07/06/2019   11:11:38  ( -70.41,-171.03)    1.58                 8
 07/06/2019   12:02:22   (  69.92,  -2.92) 07/06/2019   12:01:11  (  69.98,  -4.00)   41.70                71
 07/09/2019   02:37:31   (  70.51, 137.42) 07/09/2019   02:38:38  (  70.50, 137.36)    2.59                67
 07/09/2019   03:28:13   ( -70.41, -55.09) 07/09/2019   03:28:08  ( -70.39, -55.17)    3.18                 5
 07/09/2019   04:18:50   (  69.98, 112.88) 07/09/2019   04:17:39  (  70.07, 112.01)   34.76                71
 07/11/2019   18:53:57   (  70.51,-106.70) 07/11/2019   18:55:06  (  70.54,-106.71)    2.40                69
 07/11/2019   19:44:39   ( -70.41,  60.79) 07/11/2019   19:44:36  ( -70.43,  60.77)    2.75                 3
 07/11/2019   20:35:18   (  70.08,-131.39) 07/11/2019   20:34:06  (  70.16,-131.98)   23.68                72
 07/14/2019   11:10:24   (  70.52,   9.19) 07/14/2019   11:11:36  (  70.51,   9.14)    1.81                72
 07/14/2019   12:01:06   ( -70.40, 176.68) 07/14/2019   12:01:06  ( -70.41, 176.62)    2.29                 0
 07/14/2019   12:51:47   (  70.19, -15.67) 07/14/2019   12:50:34  (  70.24, -15.98)   12.75                73