Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 12 21.  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   ( -74.09, 102.93) 12/21/2023   17:15:27  ( -73.98, 104.23)   41.62                70
 12/21/2023   18:04:56   (  73.69, -88.80) 12/21/2023   18:04:58  (  73.69, -88.76)    1.11                 2
 12/21/2023   18:55:39   ( -73.64,  78.65) 12/21/2023   18:54:27  ( -73.62,  78.72)    2.86                72
 12/24/2023   08:41:17   (  74.18,  50.99) 12/24/2023   08:42:26  (  74.09,  52.73)   53.77                69
 12/24/2023   09:31:52   ( -73.73,-140.56) 12/24/2023   09:32:01  ( -73.71,-140.48)    2.96                 9
 12/24/2023   10:22:36   (  73.63,  26.97) 12/24/2023   10:21:27  (  73.63,  26.98)    0.83                69
 12/27/2023   00:08:17   ( -74.45,  -1.42) 12/27/2023   00:09:23  ( -74.34,   1.55)   89.81                66
 12/27/2023   00:58:49   (  73.74, 167.72) 12/27/2023   00:59:00  (  73.74, 167.82)    3.07                11
 12/27/2023   01:49:31   ( -73.62, -24.69) 12/27/2023   01:48:30  ( -73.62, -24.80)    3.46                61
 12/29/2023   16:25:44   ( -73.73, 116.06) 12/29/2023   16:26:02  ( -73.76, 116.10)    3.29                18
 12/29/2023   17:16:29   (  73.65, -76.44) 12/29/2023   17:15:29  (  73.66, -76.46)    1.80                60
 01/01/2024   07:52:42   (  73.77,  64.26) 01/01/2024   07:53:01  (  73.76,  64.38)    3.49                19
 01/01/2024   08:43:25   ( -73.69,-128.23) 01/01/2024   08:42:30  ( -73.71,-128.12)    3.81                55
 01/03/2024   23:19:37   ( -73.77,  12.58) 01/03/2024   23:20:02  ( -73.78,  12.65)    2.47                25
 01/04/2024   00:10:22   (  73.70,-179.94) 01/04/2024   00:09:29  (  73.68,-179.92)    2.23                53