Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 5 22.  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)
 05/22/2022   06:44:55   (  71.88,  77.77) 05/22/2022   06:45:25  (  71.91,  77.81)    2.96                30
 05/22/2022   07:35:38   ( -71.77,-114.70) 05/22/2022   07:34:55  ( -71.78,-114.77)    3.01                43
 05/24/2022   22:12:00   ( -71.88,  26.03) 05/24/2022   22:12:29  ( -71.87,  25.98)    2.16                29
 05/24/2022   23:02:44   (  71.77,-166.46) 05/24/2022   23:01:56  (  71.78,-166.54)    2.87                48
 05/27/2022   13:39:05   (  71.89, -25.73) 05/27/2022   13:39:28  (  71.89, -25.73)    0.11                23
 05/27/2022   14:29:49   ( -71.82, 141.70) 05/27/2022   14:28:57  ( -71.82, 141.79)    3.09                52
 05/30/2022   04:15:42   (  72.77, 113.44) 05/30/2022   04:16:47  (  72.72, 116.40)   97.72                65
 05/30/2022   05:06:10   ( -71.89, -77.49) 05/30/2022   05:06:30  ( -71.91, -77.44)    3.17                20
 05/30/2022   05:56:54   (  71.78,  90.02) 05/30/2022   05:55:57  (  71.82,  90.03)    3.60                57
 06/01/2022   19:42:45   ( -72.68,  61.89) 06/01/2022   19:43:52  ( -72.57,  64.35)   82.53                67
 06/01/2022   20:33:15   (  71.86,-129.18) 06/01/2022   20:33:30  (  71.88,-129.24)    3.19                15
 06/01/2022   21:23:59   ( -71.79,  38.26) 06/01/2022   21:23:00  ( -71.77,  38.20)    3.31                59
 06/04/2022   11:09:46   (  72.45,  10.61) 06/04/2022   11:10:55  (  72.35,  12.21)   55.09                69
 06/04/2022   12:00:20   ( -71.88, 179.05) 06/04/2022   12:00:32  ( -71.87, 178.98)    2.34                12
 06/04/2022   12:51:05   (  71.82, -13.54) 06/04/2022   12:49:58  (  71.82, -13.46)    2.88                67