Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 7 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)
 07/13/2023   11:34:32   ( -73.15,-172.41) 07/13/2023   11:35:17  ( -73.15,-172.47)    2.30                45
 07/13/2023   12:25:18   (  73.10,  -4.99) 07/13/2023   12:24:44  (  73.07,  -5.00)    3.06                34
 07/16/2023   03:01:42   (  73.19, 135.75) 07/16/2023   03:02:17  (  73.19, 135.85)    3.31                35
 07/16/2023   03:52:24   ( -73.07, -56.66) 07/16/2023   03:51:47  ( -73.07, -56.75)    3.05                37
 07/18/2023   18:28:49   ( -73.16,  84.06) 07/18/2023   18:29:21  ( -73.18,  84.07)    2.04                32
 07/18/2023   19:19:35   (  73.11,-108.52) 07/18/2023   19:18:48  (  73.09,-108.47)    2.99                47
 07/21/2023   09:55:59   (  73.16,  32.31) 07/21/2023   09:56:22  (  73.18,  32.31)    1.42                23
 07/21/2023   10:46:42   ( -73.09,-160.22) 07/21/2023   10:45:51  ( -73.12,-160.18)    3.15                51
 07/24/2023   01:23:07   ( -73.20, -19.51) 07/24/2023   01:23:25  ( -73.19, -19.42)    2.97                18
 07/24/2023   02:13:52   (  73.10, 148.02) 07/24/2023   02:12:52  (  73.09, 148.03)    0.72                60