Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 10 9.  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)
 10/11/2023   07:14:47   ( -74.08,-108.30) 10/11/2023   07:15:54  ( -73.99,-105.84)   76.08                67
 10/11/2023   08:05:20   (  73.44,  60.56) 10/11/2023   08:05:30  (  73.44,  60.61)    1.46                10
 10/11/2023   08:56:04   ( -73.37,-131.98) 10/11/2023   08:54:59  ( -73.37,-131.90)    2.72                65
 10/13/2023   22:41:49   (  74.02,-159.89) 10/13/2023   22:42:57  (  73.92,-157.73)   66.96                68
 10/13/2023   23:32:22   ( -73.42,   8.89) 10/13/2023   23:32:34  ( -73.44,   8.85)    2.92                12
 10/14/2023   00:23:07   (  73.37, 176.32) 10/14/2023   00:22:01  (  73.35, 176.32)    1.52                66
 10/16/2023   14:08:52   ( -74.06, 148.30) 10/16/2023   14:09:59  ( -73.99, 150.65)   72.56                67
 10/16/2023   14:59:25   (  73.42, -42.85) 10/16/2023   14:59:35  (  73.43, -42.92)    2.35                10
 10/16/2023   15:50:09   ( -73.36, 124.61) 10/16/2023   15:49:04  ( -73.37, 124.59)    1.26                65
 10/19/2023   05:35:52   (  73.99,  96.76) 10/19/2023   05:37:00  (  73.88,  98.67)   59.83                68
 10/19/2023   06:26:26   ( -73.43, -94.58) 10/19/2023   06:26:36  ( -73.46, -94.62)    3.22                10
 10/19/2023   07:17:11   (  73.38,  72.84) 10/19/2023   07:16:03  (  73.36,  72.83)    2.27                68
 10/21/2023   21:02:53   ( -73.96,  45.12) 10/21/2023   21:04:02  ( -73.87,  46.88)   55.09                69
 10/21/2023   21:53:29   (  73.47,-146.38) 10/21/2023   21:53:35  (  73.46,-146.36)    1.33                 6