Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 7 14.  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)
 07/14/2022   03:46:26   (  71.98, 122.70) 07/14/2022   03:46:27  (  71.95, 122.70)    2.75                 1
 07/14/2022   04:37:08   ( -71.88, -69.80) 07/14/2022   04:35:56  ( -71.89, -69.78)    0.70                72
 07/16/2022   18:22:48   (  72.17, -96.71) 07/16/2022   18:23:59  (  72.12, -96.40)   12.01                71
 07/16/2022   19:13:28   ( -71.97,  70.99) 07/16/2022   19:13:30  ( -71.95,  70.93)    3.10                 2
 07/16/2022   20:04:11   (  71.74,-121.28) 07/16/2022   20:02:58  (  71.80,-121.68)   15.39                73
 07/19/2022   09:49:50   ( -72.16,-148.43) 07/19/2022   09:51:02  ( -72.10,-148.18)   10.51                72
 07/19/2022   10:40:34   (  71.99,  19.21) 07/19/2022   10:40:29  (  72.01,  19.29)    3.52                 5
 07/19/2022   11:31:13   ( -71.73,-173.00) 07/19/2022   11:30:01  ( -71.78,-173.46)   17.00                72
 07/22/2022   01:16:53   (  72.08, 159.98) 07/22/2022   01:18:01  (  72.09, 160.05)    2.90                68
 07/22/2022   02:07:35   ( -71.98, -32.51) 07/22/2022   02:07:31  ( -71.98, -32.51)    0.28                 4
 07/22/2022   02:58:14   (  71.55, 135.59) 07/22/2022   02:57:03  (  71.61, 134.50)   39.06                71
 07/24/2022   16:43:55   ( -72.07, 108.26) 07/24/2022   16:45:04  ( -72.06, 108.24)    1.74                69
 07/24/2022   17:34:40   (  71.96, -84.22) 07/24/2022   17:34:31  (  71.95, -84.30)    2.95                 9
 07/24/2022   18:25:16   ( -71.54,  83.87) 07/24/2022   18:24:05  ( -71.63,  82.78)   39.39                71
 07/27/2022   08:11:00   (  72.06,  56.54) 07/27/2022   08:12:03  (  72.07,  56.52)    1.54                63
 07/27/2022   09:01:43   ( -72.00,-136.04) 07/27/2022   09:01:32  ( -72.02,-135.94)    3.74                11