Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 11 24.  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)
 11/26/2020   16:26:32   (  70.70, -69.40) 11/26/2020   16:27:08  (  70.71, -69.41)    1.25                36
 11/26/2020   17:17:14   ( -70.60,  98.08) 11/26/2020   17:16:38  ( -70.59,  98.05)    1.18                36
 11/29/2020   08:42:53   (  70.72,  46.49) 11/29/2020   08:43:36  (  70.73,  46.51)    2.22                43
 11/29/2020   09:33:35   ( -70.61,-146.02) 11/29/2020   09:33:06  ( -70.63,-146.02)    1.35                29
 12/02/2020   00:59:15   (  70.74, 162.38) 12/02/2020   01:00:05  (  70.76, 162.43)    2.83                50
 12/02/2020   01:49:57   ( -70.64, -30.14) 12/02/2020   01:49:35  ( -70.65, -30.10)    2.40                22
 12/02/2020   02:40:23   (  69.63, 138.73) 12/02/2020   02:39:17  (  69.72, 136.20)   98.22                66
 12/04/2020   17:15:37   (  70.76, -81.74) 12/04/2020   17:16:34  (  70.78, -81.67)    3.04                57
 12/04/2020   18:06:19   ( -70.66,  85.75) 12/04/2020   18:06:04  ( -70.68,  85.81)    2.87                15
 12/04/2020   18:56:50   (  69.92,-105.78) 12/04/2020   18:55:42  (  69.96,-107.59)   69.12                68
 12/07/2020   09:31:58   (  70.74,  34.22) 12/07/2020   09:33:04  (  70.74,  34.15)    2.80                66
 12/07/2020   10:22:40   ( -70.64,-158.29) 12/07/2020   10:22:34  ( -70.64,-158.37)    2.94                 6
 12/07/2020   11:13:17   (  70.21,   9.70) 12/07/2020   11:12:06  (  70.25,   8.70)   37.56                71