Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 8 11.  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)
 08/11/2023   12:42:16   ( -73.29, 170.77) 08/11/2023   12:43:22  ( -73.29, 170.82)    1.81                66
 08/11/2023   13:33:02   (  73.23, -21.78) 08/11/2023   13:32:49  (  73.21, -21.70)    3.06                13
 08/11/2023   14:23:35   ( -72.67, 146.75) 08/11/2023   14:22:26  ( -72.72, 144.96)   59.32                69
 08/14/2023   04:09:23   (  73.25, 119.11) 08/14/2023   04:10:22  (  73.26, 119.01)    3.52                59
 08/14/2023   05:00:06   ( -73.19, -73.43) 08/14/2023   04:59:51  ( -73.20, -73.49)    1.90                15
 08/16/2023   19:36:29   ( -73.26,  67.35) 08/16/2023   19:37:24  ( -73.28,  67.30)    2.56                55
 08/16/2023   20:27:15   (  73.21,-125.23) 08/16/2023   20:26:51  (  73.19,-125.24)    2.08                24
 08/19/2023   11:03:38   (  73.30,  15.53) 08/19/2023   11:04:23  (  73.31,  15.61)    2.89                45
 08/19/2023   11:54:21   ( -73.23,-177.00) 08/19/2023   11:53:53  ( -73.19,-176.99)    3.44                28
 08/22/2023   02:30:44   ( -73.31, -36.25) 08/22/2023   02:31:25  ( -73.29, -36.17)    3.22                41
 08/22/2023   03:21:29   (  73.22, 131.27) 08/22/2023   03:20:52  (  73.19, 131.27)    2.86                37
 08/24/2023   17:57:50   (  73.27, -87.89) 08/24/2023   17:58:23  (  73.27, -87.96)    2.34                33
 08/24/2023   18:48:33   ( -73.19,  79.61) 08/24/2023   18:47:52  ( -73.21,  79.56)    3.24                41