Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 11 13.  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)
 11/15/2020   22:30:28   ( -71.07,  18.98) 11/15/2020   22:31:39  ( -70.99,  19.89)   34.04                71
 11/15/2020   23:21:05   (  70.65,-173.00) 11/15/2020   23:21:11  (  70.63,-173.03)    2.87                 6
 11/16/2020   00:11:47   ( -70.55,  -5.53) 11/16/2020   00:10:40  ( -70.57,  -5.49)    2.19                67
 11/18/2020   14:46:56   ( -71.39, 134.35) 11/18/2020   14:48:04  ( -71.27, 136.20)   67.29                68
 11/18/2020   15:37:27   (  70.66, -57.10) 11/18/2020   15:37:40  (  70.68, -57.08)    2.26                13
 11/18/2020   16:28:08   ( -70.56, 110.38) 11/18/2020   16:27:09  ( -70.57, 110.39)    1.31                59
 11/21/2020   07:03:22   ( -71.65,-110.21) 11/21/2020   07:04:28  ( -71.53,-107.49)   96.54                66
 11/21/2020   07:53:48   (  70.67,  58.80) 11/21/2020   07:54:09  (  70.67,  58.79)    0.47                21
 11/21/2020   08:44:30   ( -70.56,-133.71) 11/21/2020   08:43:39  ( -70.56,-133.74)    1.12                51
 11/24/2020   00:10:10   (  70.69, 174.70) 11/24/2020   00:10:38  (  70.71, 174.73)    3.38                28
 11/24/2020   01:00:52   ( -70.58, -17.81) 11/24/2020   01:00:09  ( -70.56, -17.88)    3.40                43
 11/26/2020   16:26:32   (  70.70, -69.40) 11/26/2020   16:27:08  (  70.70, -69.42)    0.71                36
 11/26/2020   17:17:14   ( -70.59,  98.09) 11/26/2020   17:16:38  ( -70.60,  98.06)    1.41                36