Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 4 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)
 04/19/2023   22:47:34   ( -73.20,  18.05) 04/19/2023   22:48:45  ( -73.12,  18.90)   28.84                71
 04/19/2023   23:38:15   (  72.89,-173.98) 04/19/2023   23:38:15  (  72.87,-173.94)    2.84                 0
 04/20/2023   00:28:56   ( -72.77,  -6.41) 04/20/2023   00:27:43  ( -72.80,  -6.44)    3.12                73
 04/22/2023   14:14:38   (  72.95, -33.17) 04/22/2023   14:15:46  (  72.94, -33.20)    2.00                68
 04/22/2023   15:05:21   ( -72.88, 134.31) 04/22/2023   15:05:15  ( -72.87, 134.30)    0.76                 6
 04/22/2023   15:55:58   (  72.38, -57.34) 04/22/2023   15:54:49  (  72.41, -58.93)   53.78                69
 04/25/2023   05:41:45   ( -72.95, -84.90) 04/25/2023   05:42:46  ( -72.96, -84.92)    1.69                61
 04/25/2023   06:32:30   (  72.85,  82.61) 04/25/2023   06:32:13  (  72.86,  82.54)    2.70                17
 04/25/2023   07:23:00   ( -72.12,-108.57) 04/25/2023   07:21:54  ( -72.16,-111.13)   87.57                66
 04/27/2023   21:08:54   (  72.94,-136.63) 04/27/2023   21:09:43  (  72.96,-136.66)    3.02                49
 04/27/2023   21:59:38   ( -72.90,  30.76) 04/27/2023   21:59:12  ( -72.90,  30.85)    2.92                26
 04/30/2023   12:36:01   ( -72.94, 171.63) 04/30/2023   12:36:42  ( -72.96, 171.59)    2.84                41
 04/30/2023   13:26:46   (  72.86, -20.89) 04/30/2023   13:26:09  (  72.86, -20.97)    2.52                37