Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 7 12.  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)
 07/13/2023   11:34:32   ( -73.16,-172.43) 07/13/2023   11:35:17  ( -73.14,-172.50)    2.87                45
 07/13/2023   12:25:18   (  73.11,  -5.01) 07/13/2023   12:24:43  (  73.11,  -4.92)    3.15                35
 07/16/2023   03:01:42   (  73.15, 135.83) 07/16/2023   03:02:18  (  73.17, 135.82)    2.78                36
 07/16/2023   03:52:25   ( -73.08, -56.69) 07/16/2023   03:51:47  ( -73.11, -56.69)    3.20                38
 07/18/2023   18:28:49   ( -73.18,  84.03) 07/18/2023   18:29:21  ( -73.15,  84.01)    2.64                32
 07/18/2023   19:19:34   (  73.08,-108.44) 07/18/2023   19:18:48  (  73.06,-108.52)    3.03                46
 07/21/2023   09:55:59   (  73.18,  32.27) 07/21/2023   09:56:21  (  73.19,  32.35)    2.90                22
 07/21/2023   10:46:42   ( -73.11,-160.26) 07/21/2023   10:45:51  ( -73.08,-160.25)    3.27                51
 07/24/2023   00:32:38   (  73.98, 171.31) 07/24/2023   00:33:43  (  73.88, 174.42)   96.39                65
 07/24/2023   01:23:06   ( -73.17, -19.45) 07/24/2023   01:23:24  ( -73.19, -19.41)    2.95                18
 07/24/2023   02:13:51   (  73.07, 148.08) 07/24/2023   02:12:51  (  73.10, 148.04)    3.33                60