Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 10 20.  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)
 10/22/2022   14:03:28   ( -72.90, 147.61) 10/22/2022   14:04:36  ( -72.81, 149.71)   69.37                68
 10/22/2022   14:54:02   (  72.26, -43.76) 10/22/2022   14:54:12  (  72.24, -43.71)    3.08                10
 10/22/2022   15:44:44   ( -72.13, 123.81) 10/22/2022   15:43:42  ( -72.12, 123.72)    3.38                62
 10/25/2022   05:30:31   (  72.98,  95.72) 10/25/2022   05:31:38  (  72.84,  98.01)   76.17                67
 10/25/2022   06:21:01   ( -72.24, -95.44) 10/25/2022   06:21:17  ( -72.25, -95.47)    1.32                16
 10/25/2022   07:11:46   (  72.15,  72.04) 10/25/2022   07:10:44  (  72.15,  72.01)    1.11                62
 10/27/2022   20:57:34   ( -73.16,  43.60) 10/27/2022   20:58:39  ( -73.04,  46.64)   99.04                65
 10/27/2022   21:48:03   (  72.27,-147.22) 10/27/2022   21:48:19  (  72.26,-147.21)    1.24                16
 10/27/2022   22:38:46   ( -72.19,  20.25) 10/27/2022   22:37:48  ( -72.20,  20.32)    2.73                58
 10/30/2022   13:15:02   ( -72.27, 161.07) 10/30/2022   13:15:23  ( -72.29, 161.09)    2.88                21
 10/30/2022   14:05:47   (  72.17, -31.45) 10/30/2022   14:04:50  (  72.19, -31.45)    1.92                57
 11/02/2022   04:42:02   (  72.25, 109.36) 11/02/2022   04:42:24  (  72.27, 109.29)    2.97                22
 11/02/2022   05:32:45   ( -72.18, -83.18) 11/02/2022   05:31:53  ( -72.21, -83.18)    3.22                52