Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 1 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)
 01/22/2023   21:03:26   ( -72.97,  43.48) 01/22/2023   21:04:36  ( -72.87,  44.71)   41.80                70
 01/22/2023   21:54:04   (  72.55,-148.32) 01/22/2023   21:54:07  (  72.56,-148.22)    3.48                 3
 01/22/2023   22:44:47   ( -72.43,  19.23) 01/22/2023   22:43:37  ( -72.45,  19.20)    1.92                70
 01/25/2023   12:30:36   (  72.62,  -7.55) 01/25/2023   12:31:43  (  72.63,  -7.50)    2.11                67
 01/25/2023   13:21:20   ( -72.55, 159.90) 01/25/2023   13:21:13  ( -72.52, 159.92)    3.28                 7
 01/25/2023   14:11:56   (  72.02, -31.74) 01/25/2023   14:10:46  (  72.10, -33.19)   50.42                70
 01/28/2023   03:57:51   ( -72.62, -59.34) 01/28/2023   03:58:47  ( -72.60, -59.33)    2.23                56
 01/28/2023   04:48:35   (  72.51, 108.20) 01/28/2023   04:48:14  (  72.50, 108.13)    2.18                21
 01/30/2023   19:25:07   (  72.60,-111.08) 01/30/2023   19:25:48  (  72.60,-111.09)    0.18                41
 01/30/2023   20:15:51   ( -72.52,  56.38) 01/30/2023   20:15:17  ( -72.55,  56.44)    3.22                34
 02/02/2023   10:52:23   ( -72.62,-162.92) 02/02/2023   10:52:51  ( -72.61,-162.84)    3.13                28
 02/02/2023   11:43:07   (  72.52,   4.61) 02/02/2023   11:42:18  (  72.50,   4.61)    1.53                49