Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 9 12.  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)
 09/12/2023   06:07:32   ( -73.34, -90.21) 09/12/2023   06:08:00  ( -73.32, -90.25)    2.51                28
 09/12/2023   06:58:17   (  73.27,  77.27) 09/12/2023   06:57:27  (  73.24,  77.23)    3.05                50
 09/14/2023   21:34:39   (  73.38,-142.02) 09/14/2023   21:35:02  (  73.37,-141.92)    3.63                23
 09/14/2023   22:25:22   ( -73.28,  25.52) 09/14/2023   22:24:31  ( -73.30,  25.58)    3.04                51
 09/17/2023   13:01:42   ( -73.34, 166.33) 09/17/2023   13:02:06  ( -73.35, 166.28)    1.77                24
 09/17/2023   13:52:27   (  73.28, -26.22) 09/17/2023   13:51:33  (  73.26, -26.26)    2.32                54
 09/20/2023   04:28:48   (  73.36, 114.56) 09/20/2023   04:29:08  (  73.34, 114.50)    3.16                20
 09/20/2023   05:19:32   ( -73.30, -77.99) 09/20/2023   05:18:37  ( -73.27, -78.00)    2.58                55
 09/22/2023   19:55:53   ( -73.38,  62.79) 09/22/2023   19:56:11  ( -73.38,  62.82)    1.05                18
 09/22/2023   20:46:37   (  73.28,-129.67) 09/22/2023   20:45:38  (  73.28,-129.73)    1.90                59
 09/25/2023   10:32:28   ( -74.15,-158.14) 09/25/2023   10:33:33  ( -74.08,-155.04)   94.47                65
 09/25/2023   11:22:58   (  73.37,  11.07) 09/25/2023   11:23:12  (  73.36,  11.04)    1.70                14
 09/25/2023   12:13:42   ( -73.30, 178.55) 09/25/2023   12:12:41  ( -73.30, 178.55)    0.22                61