Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 12 19.  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)
 12/19/2022   14:40:43   ( -72.47, 139.78) 12/19/2022   14:41:38  ( -72.46, 139.77)    1.33                55
 12/19/2022   15:31:28   (  72.36, -52.69) 12/19/2022   15:31:05  (  72.37, -52.75)    2.33                23
 12/22/2022   06:08:02   (  72.47,  87.99) 12/22/2022   06:08:36  (  72.45,  88.00)    2.41                34
 12/22/2022   06:58:45   ( -72.38,-104.53) 12/22/2022   06:58:05  ( -72.38,-104.49)    1.47                40
 12/24/2022   20:44:50   (  73.23,-132.76) 12/24/2022   20:45:56  (  73.14,-130.06)   87.59                66
 12/24/2022   21:35:19   ( -72.44,  36.25) 12/24/2022   21:35:37  ( -72.44,  36.23)    0.93                18
 12/24/2022   22:26:04   (  72.34,-156.24) 12/24/2022   22:25:04  (  72.34,-156.31)    2.13                60
 12/27/2022   12:11:55   ( -72.61, 176.81) 12/27/2022   12:13:07  ( -72.58, 177.11)   10.45                72
 12/27/2022   13:02:38   (  72.41, -15.49) 12/27/2022   13:02:35  (  72.43, -15.53)    2.48                 3
 12/27/2022   13:53:19   ( -72.21, 152.21) 12/27/2022   13:52:06  ( -72.26, 151.80)   15.02                73
 12/30/2022   03:39:12   (  72.49, 125.25) 12/30/2022   03:40:06  (  72.50, 125.22)    1.82                54
 12/30/2022   04:29:56   ( -72.44, -67.34) 12/30/2022   04:29:35  ( -72.44, -67.26)    2.78                21
 01/01/2023   19:06:29   ( -72.52,  73.40) 01/01/2023   19:07:05  ( -72.50,  73.46)    2.84                36
 01/01/2023   19:57:13   (  72.38,-119.02) 01/01/2023   19:56:32  (  72.39,-119.09)    2.39                41