Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 7 3.  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)
 07/03/2022   13:07:36   ( -72.62, 161.09) 07/03/2022   13:08:44  ( -72.49, 163.05)   67.07                68
 07/03/2022   13:58:10   (  71.95, -30.28) 07/03/2022   13:58:20  (  71.93, -30.33)    3.25                10
 07/03/2022   14:48:52   ( -71.84, 137.24) 07/03/2022   14:47:49  ( -71.86, 137.19)    2.59                63
 07/06/2022   04:34:39   (  72.48, 109.62) 07/06/2022   04:35:48  (  72.35, 111.03)   49.56                69
 07/06/2022   05:25:13   ( -71.97, -82.04) 07/06/2022   05:25:23  ( -71.97, -82.02)    0.80                10
 07/06/2022   06:15:58   (  71.85,  85.48) 07/06/2022   06:14:50  (  71.87,  85.46)    2.35                68
 07/08/2022   20:01:41   ( -72.50,  57.85) 07/08/2022   20:02:50  ( -72.38,  59.33)   51.31                69
 07/08/2022   20:52:18   (  71.98,-133.81) 07/08/2022   20:52:23  (  71.97,-133.77)    2.06                 5
 07/08/2022   21:43:00   ( -71.87,  33.71) 07/08/2022   21:41:53  ( -71.85,  33.67)    2.28                67
 07/11/2022   11:28:43   (  72.31,   6.48) 07/11/2022   11:29:54  (  72.22,   7.28)   29.12                71
 07/11/2022   12:19:20   ( -71.95, 174.51) 07/11/2022   12:19:27  ( -71.94, 174.43)    2.55                 7
 07/11/2022   13:10:06   (  71.89, -18.07) 07/11/2022   13:08:53  (  71.90, -18.00)    2.62                73
 07/14/2022   02:55:46   ( -72.34, -45.30) 07/14/2022   02:56:57  ( -72.24, -44.44)   31.09                71
 07/14/2022   03:46:26   (  71.97, 122.72) 07/14/2022   03:46:27  (  71.98, 122.74)    1.20                 1
 07/14/2022   04:37:08   ( -71.86, -69.76) 07/14/2022   04:35:57  ( -71.87, -69.81)    2.21                71
 07/16/2022   18:22:48   (  72.16, -96.69) 07/16/2022   18:24:00  (  72.10, -96.43)   10.69                72
 07/16/2022   19:13:29   ( -71.99,  70.94) 07/16/2022   19:13:30  ( -72.00,  71.02)    2.87                 1
 07/16/2022   20:04:11   (  71.73,-121.26) 07/16/2022   20:02:59  (  71.78,-121.71)   16.84                72