Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 7 31.  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)
 07/31/2023   22:53:56   ( -73.79,  16.57) 07/31/2023   22:55:04  ( -73.70,  18.71)   67.40                68
 07/31/2023   23:44:31   (  73.18,-174.71) 07/31/2023   23:44:39  (  73.20,-174.70)    2.28                 8
 08/01/2023   00:35:14   ( -73.12,  -7.27) 08/01/2023   00:34:08  ( -73.13,  -7.20)    2.21                66
 08/03/2023   14:21:01   (  73.57, -34.66) 08/03/2023   14:22:11  (  73.45, -33.57)   36.70                70
 08/03/2023   15:11:37   ( -73.16, 133.59) 08/03/2023   15:11:44  ( -73.18, 133.50)    3.52                 7
 08/03/2023   16:02:23   (  73.10, -58.96) 08/03/2023   16:01:11  (  73.09, -59.04)    2.59                72
 08/06/2023   05:48:05   ( -73.46, -86.13) 08/06/2023   05:49:17  ( -73.36, -85.53)   22.05                72
 08/06/2023   06:38:47   (  73.20,  81.76) 08/06/2023   06:38:45  (  73.22,  81.82)    2.84                 2
 08/06/2023   07:29:28   ( -73.04,-110.57) 08/06/2023   07:28:15  ( -73.10,-110.77)    9.91                73
 08/08/2023   21:15:09   (  73.25,-137.42) 08/08/2023   21:16:19  (  73.27,-137.47)    2.21                70
 08/08/2023   22:05:52   ( -73.19,  30.04) 08/08/2023   22:05:48  ( -73.21,  30.05)    2.16                 4
 08/08/2023   22:56:31   (  72.78,-161.76) 08/08/2023   22:55:21  (  72.80,-163.13)   45.10                70
 08/11/2023   12:42:16   ( -73.30, 170.75) 08/11/2023   12:43:22  ( -73.29, 170.82)    2.50                66
 08/11/2023   13:33:01   (  73.20, -21.72) 08/11/2023   13:32:49  (  73.19, -21.73)    0.58                12