Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 7 10.  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)
 07/11/2022   11:28:44   (  72.34,   6.43) 07/11/2022   11:29:55  (  72.18,   7.22)   31.76                71
 07/11/2022   12:19:21   ( -71.98, 174.44) 07/11/2022   12:19:27  ( -71.95, 174.45)    3.30                 6
 07/11/2022   13:10:06   (  71.86, -18.02) 07/11/2022   13:08:54  (  71.86, -18.06)    1.53                72
 07/14/2022   02:55:46   ( -72.32, -45.26) 07/14/2022   02:56:58  ( -72.19, -44.52)   28.76                72
 07/14/2022   03:46:26   (  71.99, 122.68) 07/14/2022   03:46:26  (  71.99, 122.76)    2.99                 0
 07/14/2022   04:37:08   ( -71.89, -69.82) 07/14/2022   04:35:56  ( -71.87, -69.80)    2.19                72
 07/16/2022   18:22:48   (  72.18, -96.73) 07/16/2022   18:23:59  (  72.11, -96.42)   13.25                71
 07/16/2022   19:13:28   ( -71.97,  70.98) 07/16/2022   19:13:29  ( -71.99,  71.01)    2.46                 1
 07/16/2022   20:04:11   (  71.75,-121.30) 07/16/2022   20:02:58  (  71.79,-121.70)   14.61                73
 07/19/2022   09:49:50   ( -72.16,-148.44) 07/19/2022   09:51:02  ( -72.10,-148.19)   10.67                72
 07/19/2022   10:40:34   (  71.99,  19.20) 07/19/2022   10:40:29  (  72.00,  19.28)    3.06                 5
 07/19/2022   11:31:13   ( -71.73,-173.00) 07/19/2022   11:30:01  ( -71.78,-173.46)   16.86                72
 07/22/2022   01:16:54   (  72.08, 159.97) 07/22/2022   01:18:02  (  72.10, 160.06)    3.54                68
 07/22/2022   02:07:36   ( -71.97, -32.51) 07/22/2022   02:07:32  ( -71.99, -32.49)    1.86                 4