Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 9 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)
 09/20/2023   04:28:49   (  73.37, 114.52) 09/20/2023   04:29:08  (  73.35, 114.52)    2.62                19
 09/20/2023   05:19:32   ( -73.27, -77.93) 09/20/2023   05:18:37  ( -73.28, -77.99)    2.01                55
 09/22/2023   19:55:52   ( -73.36,  62.83) 09/22/2023   19:56:10  ( -73.36,  62.78)    1.68                18
 09/22/2023   20:46:37   (  73.30,-129.72) 09/22/2023   20:45:37  (  73.27,-129.75)    2.64                60
 09/25/2023   10:32:26   ( -74.09,-157.98) 09/25/2023   10:33:32  ( -74.03,-155.15)   86.60                66
 09/25/2023   11:22:57   (  73.35,  11.12) 09/25/2023   11:23:10  (  73.37,  11.06)    3.24                13
 09/25/2023   12:13:41   ( -73.29, 178.58) 09/25/2023   12:12:39  ( -73.30, 178.56)    2.22                62
 09/28/2023   01:59:27   (  73.90, 150.76) 09/28/2023   02:00:36  (  73.80, 152.60)   58.01                69
 09/28/2023   02:50:02   ( -73.39, -40.71) 09/28/2023   02:50:12  ( -73.37, -40.69)    2.29                10
 09/28/2023   03:40:46   (  73.29, 126.83) 09/28/2023   03:39:39  (  73.28, 126.77)    2.45                67
 09/30/2023   17:26:29   ( -73.81,  99.27) 09/30/2023   17:27:39  ( -73.72, 100.66)   44.17                70
 09/30/2023   18:17:06   (  73.37, -92.38) 09/30/2023   18:17:11  (  73.37, -92.45)    2.27                 5
 09/30/2023   19:07:50   ( -73.30,  75.10) 09/30/2023   19:06:40  ( -73.30,  75.06)    1.56                70
 10/03/2023   08:53:28   (  73.60,  48.05) 10/03/2023   08:54:40  (  73.52,  48.50)   16.55                72
 10/03/2023   09:44:09   ( -73.38,-144.12) 10/03/2023   09:44:11  ( -73.36,-144.21)    3.64                 2