Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 12 17.  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   ( -72.50, 139.73) 12/19/2022   14:41:37  ( -72.49, 139.83)    3.38                54
 12/19/2022   15:31:28   (  72.39, -52.74) 12/19/2022   15:31:04  (  72.40, -52.70)    2.24                24
 12/22/2022   06:08:02   (  72.44,  88.04) 12/22/2022   06:08:37  (  72.42,  87.95)    3.66                35
 12/22/2022   06:58:45   ( -72.36,-104.48) 12/22/2022   06:58:06  ( -72.36,-104.53)    1.81                39
 12/24/2022   20:44:51   (  73.26,-132.81) 12/24/2022   20:45:56  (  73.17,-130.00)   91.07                65
 12/24/2022   21:35:20   ( -72.46,  36.20) 12/24/2022   21:35:37  ( -72.47,  36.29)    2.99                17
 12/24/2022   22:26:05   (  72.36,-156.29) 12/24/2022   22:25:04  (  72.37,-156.25)    1.64                61
 12/27/2022   12:11:55   ( -72.63, 176.76) 12/27/2022   12:13:07  ( -72.56, 177.08)   12.71                72
 12/27/2022   13:02:38   (  72.43, -15.54) 12/27/2022   13:02:35  (  72.41, -15.56)    2.81                 3
 12/27/2022   13:53:18   ( -72.19, 152.27) 12/27/2022   13:52:06  ( -72.24, 151.77)   18.22                72
 12/30/2022   03:39:12   (  72.51, 125.20) 12/30/2022   03:40:06  (  72.48, 125.19)    2.87                54
 12/30/2022   04:29:55   ( -72.41, -67.28) 12/30/2022   04:29:35  ( -72.43, -67.28)    2.20                20