Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 4 23.  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)
 04/23/2022   04:46:49   ( -71.85, -72.89) 04/23/2022   04:47:54  ( -71.83, -72.98)    3.49                65
 04/23/2022   05:37:34   (  71.76,  94.57) 04/23/2022   05:37:21  (  71.74,  94.51)    3.43                13
 04/23/2022   06:28:08   ( -71.21, -97.11) 04/23/2022   06:26:58  ( -71.24, -98.68)   56.31                70
 04/25/2022   20:13:56   (  71.87,-124.68) 04/25/2022   20:14:52  (  71.88,-124.64)    2.69                56
 04/25/2022   21:04:39   ( -71.77,  42.81) 04/25/2022   21:04:22  ( -71.77,  42.80)    0.65                17
 04/25/2022   21:55:08   (  70.86,-148.27) 04/25/2022   21:54:03  (  70.91,-150.95)   97.73                65
 04/28/2022   11:41:02   ( -71.87,-176.43) 04/28/2022   11:41:55  ( -71.84,-176.46)    2.58                53
 04/28/2022   12:31:46   (  71.75,  -8.90) 04/28/2022   12:31:22  (  71.74,  -8.99)    2.89                24
 05/01/2022   03:08:09   (  71.86, 131.83) 05/01/2022   03:08:54  (  71.86, 131.82)    0.28                45
 05/01/2022   03:58:52   ( -71.74, -60.65) 05/01/2022   03:58:24  ( -71.74, -60.74)    3.10                28
 05/03/2022   18:35:15   ( -71.85,  80.08) 05/03/2022   18:35:56  ( -71.84,  80.04)    1.98                41
 05/03/2022   19:25:59   (  71.75,-112.41) 05/03/2022   19:25:23  (  71.74,-112.49)    3.11                36
 05/06/2022   10:02:21   (  71.87,  28.30) 05/06/2022   10:02:53  (  71.87,  28.35)    1.60                32
 05/06/2022   10:53:04   ( -71.74,-164.15) 05/06/2022   10:52:23  ( -71.76,-164.20)    2.79                41