Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 1 30.  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)
 01/31/2020   10:14:51   ( -71.00,-157.76) 01/31/2020   10:16:01  ( -70.92,-156.39)   50.28                70
 01/31/2020   11:05:26   (  70.42,  10.50) 01/31/2020   11:05:35  (  70.44,  10.52)    2.58                 9
 01/31/2020   11:56:07   ( -70.32, 177.98) 01/31/2020   11:55:05  ( -70.33, 177.99)    1.22                62
 02/03/2020   02:31:19   ( -71.16, -42.12) 02/03/2020   02:32:27  ( -71.03, -40.34)   65.69                68
 02/03/2020   03:21:51   (  70.42, 126.39) 02/03/2020   03:22:03  (  70.44, 126.40)    1.88                12
 02/03/2020   04:12:32   ( -70.32, -66.11) 02/03/2020   04:11:33  ( -70.33, -66.13)    1.65                59
 02/05/2020   18:47:45   ( -71.21,  73.69) 02/05/2020   18:48:53  ( -71.14,  75.71)   72.91                68
 02/05/2020   19:38:16   (  70.43,-117.71) 02/05/2020   19:38:31  (  70.43,-117.72)    0.86                15
 02/05/2020   20:28:57   ( -70.31,  49.79) 02/05/2020   20:28:01  ( -70.33,  49.75)    1.97                56
 02/08/2020   11:04:12   ( -71.31,-170.59) 02/08/2020   11:05:19  ( -71.24,-168.25)   84.01                67
 02/08/2020   11:54:41   (  70.43,  -1.82) 02/08/2020   11:54:59  (  70.43,  -1.86)    1.54                18
 02/08/2020   12:45:21   ( -70.31, 165.69) 02/08/2020   12:44:28  ( -70.32, 165.62)    2.56                53
 02/11/2020   03:20:38   ( -71.41, -54.87) 02/11/2020   03:21:44  ( -71.34, -52.21)   94.92                66
 02/11/2020   04:11:05   (  70.44, 114.07) 02/11/2020   04:11:25  (  70.47, 114.09)    3.24                20
 02/11/2020   05:01:47   ( -70.36, -78.49) 02/11/2020   05:00:55  ( -70.36, -78.43)    2.32                52