Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 4 22.  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, -33.22) 04/22/2023   14:15:50  (  72.96, -33.17)    2.28                71
 04/22/2023   15:05:22   ( -72.91, 134.25) 04/22/2023   15:05:19  ( -72.90, 134.33)    3.12                 3
 04/22/2023   15:56:01   (  72.50, -57.59) 04/22/2023   15:54:50  (  72.60, -58.60)   35.18                71
 04/25/2023   05:41:45   ( -72.98, -84.97) 04/25/2023   05:42:53  ( -72.99, -84.90)    2.46                68
 04/25/2023   06:32:30   (  72.88,  82.55) 04/25/2023   06:32:20  (  72.90,  82.57)    1.86                10
 04/25/2023   07:23:06   ( -72.46,-109.24) 04/25/2023   07:21:55  ( -72.52,-110.52)   43.31                71
 04/27/2023   21:08:54   (  72.98,-136.71) 04/27/2023   21:09:55  (  72.99,-136.67)    1.97                61
 04/27/2023   21:59:37   ( -72.89,  30.78) 04/27/2023   21:59:25  ( -72.88,  30.75)    2.43                12
 04/27/2023   22:50:09   (  72.14,-160.37) 04/27/2023   22:49:03  (  72.19,-162.88)   85.68                66
 04/30/2023   12:36:01   ( -72.99, 171.52) 04/30/2023   12:37:00  ( -72.97, 171.51)    2.82                59
 04/30/2023   13:26:46   (  72.91, -20.99) 04/30/2023   13:26:26  (  72.92, -20.93)    2.80                20
 04/30/2023   14:17:15   ( -72.11, 147.95) 04/30/2023   14:16:09  ( -72.12, 145.22)   93.41                66
 05/03/2023   04:03:09   (  72.97, 119.81) 05/03/2023   04:04:02  (  72.96, 119.73)    3.17                53
 05/03/2023   04:53:53   ( -72.93, -72.78) 05/03/2023   04:53:31  ( -72.90, -72.74)    3.26                22
 05/05/2023   19:30:15   ( -73.00,  68.01) 05/05/2023   19:31:05  ( -72.99,  68.02)    1.22                50
 05/05/2023   20:21:00   (  72.93,-124.53) 05/05/2023   20:20:31  (  72.94,-124.43)    3.46                29