Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 4 20.  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)
 04/22/2023   14:14:39   (  72.98, -33.23) 04/22/2023   14:15:50  (  72.97, -33.17)    2.99                71
 04/22/2023   15:05:22   ( -72.91, 134.24) 04/22/2023   15:05:19  ( -72.90, 134.34)    3.55                 3
 04/22/2023   15:56:01   (  72.51, -57.60) 04/22/2023   15:54:50  (  72.60, -58.59)   34.48                71
 04/25/2023   05:41:45   ( -72.98, -84.98) 04/25/2023   05:42:54  ( -72.95, -84.97)    3.54                69
 04/25/2023   06:32:30   (  72.89,  82.53) 04/25/2023   06:32:20  (  72.91,  82.60)    3.40                10
 04/25/2023   07:23:06   ( -72.46,-109.25) 04/25/2023   07:21:55  ( -72.54,-110.49)   42.32                71
 04/27/2023   21:08:54   (  72.98,-136.72) 04/27/2023   21:09:56  (  72.96,-136.72)    2.17                62
 04/27/2023   21:59:37   ( -72.90,  30.78) 04/27/2023   21:59:25  ( -72.90,  30.80)    1.05                12
 04/27/2023   22:50:10   (  72.20,-160.48) 04/27/2023   22:49:03  (  72.22,-162.83)   79.93                67
 04/30/2023   12:36:01   ( -72.99, 171.51) 04/30/2023   12:37:00  ( -73.01, 171.59)    2.83                59
 04/30/2023   13:26:46   (  72.91, -21.01) 04/30/2023   13:26:27  (  72.91, -20.96)    1.63                19
 04/30/2023   14:17:15   ( -72.12, 147.95) 04/30/2023   14:16:09  ( -72.16, 145.29)   90.87                66
 05/03/2023   04:03:09   (  72.98, 119.80) 05/03/2023   04:04:02  (  73.01, 119.82)    3.25                53
 05/03/2023   04:53:52   ( -72.88, -72.68) 05/03/2023   04:53:32  ( -72.90, -72.75)    3.05                20