Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 12 20.  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)
 12/21/2023   17:14:17   ( -74.07, 102.96) 12/21/2023   17:15:27  ( -74.00, 104.28)   40.95                70
 12/21/2023   18:04:56   (  73.68, -88.76) 12/21/2023   18:04:58  (  73.71, -88.72)    3.29                 2
 12/21/2023   18:55:38   ( -73.62,  78.69) 12/21/2023   18:54:26  ( -73.64,  78.76)    2.99                72
 12/24/2023   08:41:17   (  74.21,  50.90) 12/24/2023   08:42:25  (  74.12,  52.79)   58.34                68
 12/24/2023   09:31:51   ( -73.71,-140.52) 12/24/2023   09:32:01  ( -73.69,-140.53)    2.49                10
 12/24/2023   10:22:36   (  73.62,  27.01) 12/24/2023   10:21:28  (  73.60,  26.92)    3.22                68
 12/27/2023   00:08:18   ( -74.49,  -1.51) 12/27/2023   00:09:23  ( -74.38,   1.65)   94.90                65
 12/27/2023   00:58:49   (  73.72, 167.76) 12/27/2023   00:59:01  (  73.73, 167.79)    1.18                12
 12/27/2023   01:49:32   ( -73.65, -24.76) 12/27/2023   01:48:30  ( -73.66, -24.71)    2.05                62
 12/29/2023   16:25:44   ( -73.71, 116.10) 12/29/2023   16:26:04  ( -73.71, 116.00)    3.02                20
 12/29/2023   17:16:30   (  73.68, -76.52) 12/29/2023   17:15:30  (  73.67, -76.44)    2.57                60
 01/01/2024   07:52:42   (  73.75,  64.31) 01/01/2024   07:53:03  (  73.74,  64.32)    1.28                21
 01/01/2024   08:43:25   ( -73.67,-128.19) 01/01/2024   08:42:32  ( -73.68,-128.17)    1.15                53