Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 1 17.  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)
 01/18/2020   00:52:38   ( -70.47, -16.38) 01/18/2020   00:53:50  ( -70.48, -16.46)    3.21                72
 01/18/2020   01:43:23   (  70.40, 151.03) 01/18/2020   01:43:17  (  70.37, 151.03)    2.54                 6
 01/18/2020   02:34:01   ( -70.15, -41.25) 01/18/2020   02:32:48  ( -70.21, -41.58)   14.09                73
 01/20/2020   17:09:04   ( -70.57,  99.35) 01/20/2020   17:10:16  ( -70.55,  99.53)    6.93                72
 01/20/2020   17:59:47   (  70.40, -93.07) 01/20/2020   17:59:44  (  70.39, -93.07)    0.80                 3
 01/20/2020   18:50:27   ( -70.25,  74.49) 01/20/2020   18:49:14  ( -70.29,  74.41)    4.71                73
 01/23/2020   09:25:32   ( -70.73,-145.01) 01/23/2020   09:26:43  ( -70.63,-144.48)   22.36                71
 01/23/2020   10:16:12   (  70.40,  22.82) 01/23/2020   10:16:12  (  70.41,  22.84)    0.51                 0
 01/23/2020   11:06:53   ( -70.30,-169.70) 01/23/2020   11:05:42  ( -70.30,-169.68)    0.58                71
 01/26/2020   01:41:59   ( -70.83, -29.28) 01/26/2020   01:43:10  ( -70.69, -28.50)   32.62                71
 01/26/2020   02:32:37   (  70.41, 138.71) 01/26/2020   02:32:40  (  70.42, 138.73)    0.83                 3
 01/26/2020   03:23:18   ( -70.31, -53.80) 01/26/2020   03:22:10  ( -70.31, -53.79)    1.05                68
 01/28/2020   17:58:26   ( -70.94,  86.44) 01/28/2020   17:59:36  ( -70.81,  87.55)   43.28                70
 01/28/2020   18:49:02   (  70.42,-105.40) 01/28/2020   18:49:08  (  70.42,-105.38)    0.68                 6
 01/28/2020   19:39:43   ( -70.31,  62.09) 01/28/2020   19:38:38  ( -70.32,  62.11)    1.33                65