Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 4 25.  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)
 04/25/2023   05:41:45   ( -72.96, -84.92) 04/25/2023   05:42:53  ( -72.97, -84.93)    1.48                68
 04/25/2023   06:32:31   (  72.90,  82.50) 04/25/2023   06:32:20  (  72.88,  82.54)    2.49                11
 04/25/2023   07:23:06   ( -72.43,-109.20) 04/25/2023   07:21:56  ( -72.44,-110.66)   49.02                70
 04/27/2023   21:08:54   (  72.97,-136.69) 04/27/2023   21:09:54  (  72.95,-136.74)    2.66                60
 04/27/2023   21:59:36   ( -72.89,  30.79) 04/27/2023   21:59:22  ( -72.88,  30.77)    1.36                14
 04/27/2023   22:50:07   (  72.08,-160.25) 04/27/2023   22:49:01  (  72.15,-162.95)   92.43                66
 04/30/2023   12:35:59   ( -72.98, 171.54) 04/30/2023   12:36:55  ( -72.96, 171.53)    1.95                56
 04/30/2023   13:26:44   (  72.89, -20.95) 04/30/2023   13:26:22  (  72.87, -21.01)    2.94                22
 05/03/2023   04:03:06   (  72.97, 119.83) 05/03/2023   04:03:54  (  72.96, 119.77)    1.90                48
 05/03/2023   04:53:49   ( -72.88, -72.67) 05/03/2023   04:53:23  ( -72.90, -72.71)    2.97                26
 05/05/2023   19:30:11   ( -72.98,  68.06) 05/05/2023   19:30:55  ( -72.96,  68.01)    2.62                44
 05/05/2023   20:20:56   (  72.90,-124.46) 05/05/2023   20:20:21  (  72.92,-124.44)    1.53                35
 05/08/2023   10:57:17   (  73.00,  16.30) 05/08/2023   10:57:52  (  72.99,  16.32)    0.80                35
 05/08/2023   11:48:00   ( -72.90,-176.18) 05/08/2023   11:47:22  ( -72.88,-176.26)    3.45                38