Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 1 13.  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)
 01/14/2023   23:32:13   ( -72.53,   7.08) 01/14/2023   23:33:00  ( -72.56,   7.08)    3.45                47
 01/15/2023   00:22:58   (  72.46, 174.55) 01/15/2023   00:22:27  (  72.47, 174.55)    1.47                31
 01/17/2023   14:59:30   (  72.53, -44.70) 01/17/2023   14:59:58  (  72.54, -44.72)    0.91                28
 01/17/2023   15:50:14   ( -72.46, 122.74) 01/17/2023   15:49:27  ( -72.47, 122.79)    1.95                47
 01/20/2023   05:36:13   (  73.11,  94.95) 01/20/2023   05:37:21  (  73.05,  96.88)   62.71                68
 01/20/2023   06:26:47   ( -72.54, -96.51) 01/20/2023   06:26:59  ( -72.51, -96.52)    3.21                12
 01/20/2023   07:17:31   (  72.42,  71.04) 01/20/2023   07:16:26  (  72.41,  70.94)    3.58                65
 01/22/2023   21:03:20   ( -72.62,  44.22) 01/22/2023   21:04:29  ( -72.63,  44.30)    2.80                69
 01/22/2023   21:54:04   (  72.51,-148.24) 01/22/2023   21:53:56  (  72.52,-148.24)    1.39                 8
 01/22/2023   22:44:42   ( -72.13,  19.83) 01/22/2023   22:43:31  ( -72.15,  18.70)   38.40                71
 01/25/2023   12:30:37   (  72.61,  -7.53) 01/25/2023   12:31:26  (  72.61,  -7.47)    2.16                49
 01/25/2023   13:21:20   ( -72.48, 160.04) 01/25/2023   13:20:56  ( -72.50, 159.96)    3.47                24