Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 9 22.  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)
 09/23/2020   08:12:16   (  70.62,  54.06) 09/23/2020   08:12:40  (  70.64,  54.11)    3.42                24
 09/23/2020   09:02:57   ( -70.52,-138.47) 09/23/2020   09:02:10  ( -70.53,-138.42)    2.34                47
 09/26/2020   00:28:39   (  70.64, 169.94) 09/26/2020   00:29:10  (  70.63, 169.98)    1.64                31
 09/26/2020   01:19:20   ( -70.54, -22.58) 09/26/2020   01:18:40  ( -70.52, -22.55)    1.92                40
 09/28/2020   16:45:01   (  70.61, -74.10) 09/28/2020   16:45:40  (  70.62, -74.17)    2.71                39
 09/28/2020   17:35:42   ( -70.50,  93.39) 09/28/2020   17:35:10  ( -70.51,  93.31)    3.01                32
 10/01/2020   09:01:24   (  70.63,  41.78) 10/01/2020   09:02:09  (  70.66,  41.77)    2.79                45
 10/01/2020   09:52:06   ( -70.57,-150.81) 10/01/2020   09:51:39  ( -70.55,-150.75)    3.31                27
 10/04/2020   01:17:46   (  70.65, 157.66) 10/04/2020   01:18:38  (  70.64, 157.62)    2.32                52
 10/04/2020   02:08:27   ( -70.54, -34.84) 10/04/2020   02:08:08  ( -70.54, -34.89)    2.00                19