Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2021 12 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)
 01/02/2022   07:09:53   ( -71.54,-108.96) 01/02/2022   07:10:34  ( -71.56,-109.00)    2.72                41
 01/02/2022   08:00:38   (  71.48,  58.47) 01/02/2022   08:00:01  (  71.47,  58.48)    1.20                37
 01/04/2022   22:37:04   (  71.57,-160.79) 01/04/2022   22:37:35  (  71.57,-160.75)    1.42                31
 01/04/2022   23:27:47   ( -71.46,   6.74) 01/04/2022   23:27:05  ( -71.46,   6.70)    1.53                42
 01/07/2022   14:04:13   ( -71.55, 147.49) 01/07/2022   14:04:39  ( -71.55, 147.46)    1.10                26
 01/07/2022   14:54:57   (  71.44, -45.01) 01/07/2022   14:54:06  (  71.45, -45.07)    2.19                51
 01/10/2022   04:40:54   ( -72.42, -73.25) 01/10/2022   04:42:00  ( -72.34, -70.58)   90.24                66
 01/10/2022   05:31:23   (  71.55,  95.72) 01/10/2022   05:31:40  (  71.54,  95.68)    1.94                17
 01/10/2022   06:22:07   ( -71.47, -96.83) 01/10/2022   06:21:09  ( -71.48, -96.78)    2.15                58
 01/12/2022   20:07:57   (  72.12,-124.43) 01/12/2022   20:09:06  (  71.99,-122.95)   52.62                69
 01/12/2022   20:58:32   ( -71.58,  43.90) 01/12/2022   20:58:42  ( -71.56,  43.95)    2.44                10
 01/12/2022   21:49:16   (  71.47,-148.61) 01/12/2022   21:48:09  (  71.46,-148.58)    2.46                67