Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 10 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)
 10/13/2023   22:41:49   (  74.04,-159.92) 10/13/2023   22:42:56  (  73.96,-157.65)   70.16                67
 10/13/2023   23:32:22   ( -73.44,   8.85) 10/13/2023   23:32:34  ( -73.42,   8.81)    2.00                12
 10/14/2023   00:23:06   (  73.33, 176.39) 10/14/2023   00:22:01  (  73.34, 176.28)    3.64                65
 10/16/2023   14:08:52   ( -74.08, 148.24) 10/16/2023   14:09:59  ( -73.97, 150.60)   73.37                67
 10/16/2023   14:59:25   (  73.44, -42.89) 10/16/2023   14:59:34  (  73.47, -42.84)    3.15                 9
 10/16/2023   15:50:09   ( -73.38, 124.56) 10/16/2023   15:49:03  ( -73.40, 124.65)    3.42                66
 10/19/2023   05:35:52   (  73.96,  96.84) 10/19/2023   05:37:01  (  73.87,  98.63)   56.16                69
 10/19/2023   06:26:27   ( -73.45, -94.63) 10/19/2023   06:26:37  ( -73.44, -94.66)    2.28                10
 10/19/2023   07:17:12   (  73.40,  72.80) 10/19/2023   07:16:03  (  73.40,  72.90)    3.28                69
 10/21/2023   21:02:53   ( -73.98,  45.06) 10/21/2023   21:04:02  ( -73.85,  46.83)   56.58                69
 10/21/2023   21:53:28   (  73.44,-146.32) 10/21/2023   21:53:35  (  73.44,-146.40)    2.58                 7
 10/21/2023   22:44:12   ( -73.38,  21.13) 10/21/2023   22:43:04  ( -73.38,  21.11)    0.96                68
 10/24/2023   12:29:52   (  73.84,  -6.29) 10/24/2023   12:31:02  (  73.75,  -5.11)   37.88                70
 10/24/2023   13:20:30   ( -73.48, 161.87) 10/24/2023   13:20:35  ( -73.48, 161.94)    2.25                 5
 10/24/2023   14:11:14   (  73.38, -30.58) 10/24/2023   14:10:02  (  73.39, -30.62)    1.29                72