Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 6 19.  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)
 06/19/2023   16:30:24   (  73.83, -68.27) 06/19/2023   16:31:30  (  73.73, -65.40)   89.76                66
 06/19/2023   17:20:54   ( -73.09, 100.79) 06/19/2023   17:21:10  ( -73.08, 100.88)    2.79                16
 06/19/2023   18:11:39   (  73.02, -91.75) 06/19/2023   18:10:37  (  73.00, -91.64)    3.68                62
 06/22/2023   07:57:28   ( -73.62,-119.49) 06/22/2023   07:58:37  ( -73.50,-117.67)   58.93                69
 06/22/2023   08:48:03   (  73.05,  49.11) 06/22/2023   08:48:11  (  73.04,  49.05)    2.22                 8
 06/22/2023   09:38:47   ( -73.00,-143.46) 06/22/2023   09:37:40  ( -72.97,-143.46)    2.47                67
 06/24/2023   23:24:32   (  73.29,-170.49) 06/24/2023   23:25:43  (  73.22,-169.98)   18.10                71
 06/25/2023   00:15:12   ( -73.04,  -2.61) 06/25/2023   00:15:14  ( -73.05,  -2.70)    2.98                 2
 06/25/2023   01:05:55   (  72.87, 165.07) 06/25/2023   01:04:42  (  72.91, 164.67)   13.87                73
 06/27/2023   14:51:38   ( -73.14, 138.11) 06/27/2023   14:52:47  ( -73.16, 138.13)    2.03                69
 06/27/2023   15:42:23   (  73.07, -54.43) 06/27/2023   15:42:14  (  73.06, -54.41)    0.61                 9
 06/27/2023   16:32:59   ( -72.61, 113.86) 06/27/2023   16:31:49  ( -72.68, 112.48)   46.44                70
 06/30/2023   06:18:48   (  73.12,  86.39) 06/30/2023   06:19:47  (  73.15,  86.36)    2.71                59
 06/30/2023   07:09:32   ( -73.07,-106.19) 06/30/2023   07:09:16  ( -73.08,-106.13)    2.40                16
 06/30/2023   08:00:02   (  72.24,  62.86) 06/30/2023   07:58:57  (  72.25,  59.92)   99.82                65
 07/02/2023   21:45:56   ( -73.13,  34.61) 07/02/2023   21:46:48  ( -73.15,  34.61)    1.39                52
 07/02/2023   22:36:41   (  73.06,-157.92) 07/02/2023   22:36:15  (  73.05,-157.94)    1.49                26