Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 5 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)
 05/22/2022   06:44:55   (  71.89,  77.75) 05/22/2022   06:45:25  (  71.89,  77.78)    1.05                30
 05/22/2022   07:35:38   ( -71.78,-114.72) 05/22/2022   07:34:55  ( -71.77,-114.79)    2.55                43
 05/24/2022   22:12:00   ( -71.88,  26.02) 05/24/2022   22:12:28  ( -71.91,  26.05)    2.64                28
 05/24/2022   23:02:44   (  71.78,-166.47) 05/24/2022   23:01:55  (  71.81,-166.47)    3.62                49
 05/27/2022   13:39:06   (  71.90, -25.75) 05/27/2022   13:39:29  (  71.87, -25.77)    3.49                23
 05/27/2022   14:29:49   ( -71.78, 141.78) 05/27/2022   14:28:58  ( -71.80, 141.76)    3.31                51
 05/30/2022   04:15:42   (  72.78, 113.42) 05/30/2022   04:16:47  (  72.70, 116.35)   97.05                65
 05/30/2022   05:06:10   ( -71.90, -77.50) 05/30/2022   05:06:30  ( -71.89, -77.48)    1.00                20
 05/30/2022   05:56:54   (  71.79,  90.00) 05/30/2022   05:55:57  (  71.79,  89.99)    0.80                57
 06/01/2022   19:42:45   ( -72.68,  61.88) 06/01/2022   19:43:51  ( -72.59,  64.39)   84.03                66
 06/01/2022   20:33:15   (  71.87,-129.20) 06/01/2022   20:33:29  (  71.90,-129.21)    3.51                14
 06/01/2022   21:23:59   ( -71.80,  38.24) 06/01/2022   21:22:59  ( -71.79,  38.24)    1.10                60