Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 5 18.  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)
 05/18/2023   23:55:15   ( -73.52,   0.80) 05/18/2023   23:56:24  ( -73.40,   2.62)   59.38                69
 05/19/2023   00:45:50   (  72.96, 169.38) 05/19/2023   00:45:58  (  72.95, 169.35)    1.66                 8
 05/19/2023   01:36:34   ( -72.91, -23.19) 05/19/2023   01:35:27  ( -72.88, -23.15)    3.22                67
 05/21/2023   15:22:18   (  73.37, -50.58) 05/21/2023   15:23:28  (  73.29, -49.36)   39.92                70
 05/21/2023   16:12:55   ( -72.96, 117.64) 05/21/2023   16:13:02  ( -72.96, 117.61)    0.86                 7
 05/21/2023   17:03:40   (  72.90, -74.91) 05/21/2023   17:02:29  (  72.87, -74.92)    2.81                71
 05/24/2023   06:49:23   ( -73.32,-102.21) 05/24/2023   06:50:34  ( -73.23,-101.24)   32.58                71
 05/24/2023   07:40:02   (  72.96,  65.89) 05/24/2023   07:40:04  (  72.98,  65.90)    2.29                 2
 05/24/2023   08:30:46   ( -72.90,-126.66) 05/24/2023   08:29:34  ( -72.87,-126.68)    3.53                72
 05/26/2023   22:16:27   (  73.19,-153.65) 05/26/2023   22:17:38  (  73.13,-153.20)   15.62                71
 05/26/2023   23:07:08   ( -72.97,  14.14) 05/26/2023   23:07:09  ( -72.97,  14.11)    1.30                 1
 05/26/2023   23:57:50   (  72.76,-178.11) 05/26/2023   23:56:37  (  72.82,-178.54)   15.45                73
 05/29/2023   13:43:31   ( -73.09, 154.83) 05/29/2023   13:44:43  ( -73.09, 154.97)    4.56                72
 05/29/2023   14:34:15   (  72.99, -37.65) 05/29/2023   14:34:10  (  73.00, -37.58)    2.17                 5