Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 8 30.  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)
 08/30/2022   17:02:44   ( -72.36, 103.37) 08/30/2022   17:03:56  ( -72.29, 103.95)   21.10                72
 08/30/2022   17:53:25   (  72.08, -88.78) 08/30/2022   17:53:25  (  72.10, -88.76)    1.58                 0
 08/30/2022   18:44:08   ( -71.99,  78.72) 08/30/2022   18:42:55  ( -71.97,  78.66)    2.42                73
 09/02/2022   08:29:46   (  72.28,  51.79) 09/02/2022   08:30:58  (  72.23,  52.10)   11.44                72
 09/02/2022   09:20:27   ( -72.07,-140.50) 09/02/2022   09:20:29  ( -72.06,-140.58)    3.07                 2
 09/02/2022   10:11:09   (  71.85,  27.23) 09/02/2022   10:09:57  (  71.92,  26.81)   16.17                72
 09/04/2022   23:56:48   ( -72.31,  -0.01) 09/04/2022   23:58:00  ( -72.25,   0.36)   14.67                72
 09/05/2022   00:47:30   (  72.10, 167.71) 09/05/2022   00:47:28  (  72.10, 167.74)    1.07                 2
 09/05/2022   01:38:12   ( -71.94, -24.67) 09/05/2022   01:36:58  ( -71.98, -24.83)    7.24                74
 09/07/2022   15:23:50   (  72.25, -51.63) 09/07/2022   15:25:01  (  72.22, -51.43)    7.23                71
 09/07/2022   16:14:32   ( -72.08, 116.01) 09/07/2022   16:14:31  ( -72.11, 116.00)    2.99                 1
 09/07/2022   17:05:13   (  71.83, -76.19) 09/07/2022   17:04:01  (  71.85, -76.81)   21.81                72
 09/10/2022   06:50:52   ( -72.23,-103.32) 09/10/2022   06:52:04  ( -72.23,-103.18)    4.60                72
 09/10/2022   07:41:36   (  72.13,  64.18) 09/10/2022   07:41:31  (  72.13,  64.28)    3.33                 5
 09/10/2022   08:32:16   ( -71.86,-127.98) 09/10/2022   08:31:03  ( -71.91,-128.47)   17.83                73
 09/12/2022   22:17:54   (  72.18,-154.96) 09/12/2022   22:19:05  (  72.18,-155.02)    1.86                71
 09/12/2022   23:08:38   ( -72.11,  12.49) 09/12/2022   23:08:34  ( -72.13,  12.52)    2.45                 4