Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 6 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)
 06/22/2023   07:57:28   ( -73.60,-119.46) 06/22/2023   07:58:37  ( -73.51,-117.64)   58.10                69
 06/22/2023   08:48:04   (  73.08,  49.04) 06/22/2023   08:48:11  (  73.06,  49.08)    3.04                 7
 06/22/2023   09:38:47   ( -72.98,-143.42) 06/22/2023   09:37:40  ( -72.99,-143.43)    0.56                67
 06/24/2023   23:24:32   (  73.28,-170.46) 06/24/2023   23:25:44  (  73.18,-170.06)   16.32                72
 06/25/2023   00:15:13   ( -73.08,  -2.69) 06/25/2023   00:15:14  ( -73.06,  -2.68)    1.72                 1
 06/25/2023   01:05:55   (  72.85, 165.10) 06/25/2023   01:04:42  (  72.92, 164.69)   15.54                73
 06/27/2023   14:51:37   ( -73.12, 138.14) 06/27/2023   14:52:47  ( -73.11, 138.04)    3.57                70
 06/27/2023   15:42:22   (  73.05, -54.39) 06/27/2023   15:42:13  (  73.08, -54.39)    2.66                 9
 06/27/2023   16:32:59   ( -72.65, 113.78) 06/27/2023   16:31:48  ( -72.69, 112.49)   42.95                71
 06/30/2023   06:18:48   (  73.16,  86.31) 06/30/2023   06:19:46  (  73.15,  86.38)    2.15                58
 06/30/2023   07:09:31   ( -73.06,-106.15) 06/30/2023   07:09:16  ( -73.04,-106.22)    3.11                15
 07/02/2023   21:45:56   ( -73.12,  34.65) 07/02/2023   21:46:48  ( -73.15,  34.61)    3.39                52
 07/02/2023   22:36:41   (  73.04,-157.88) 07/02/2023   22:36:15  (  73.05,-157.93)    1.96                26