Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2021 2 2.  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)
 02/04/2021   09:13:07   (  70.88,  39.00) 02/04/2021   09:14:14  (  70.89,  39.01)    1.40                67
 02/04/2021   10:03:48   ( -70.78,-153.51) 02/04/2021   10:03:44  ( -70.77,-153.54)    1.28                 4
 02/04/2021   10:54:27   (  70.41,  14.40) 02/04/2021   10:53:15  (  70.46,  13.63)   29.24                72
 02/07/2021   01:29:30   (  71.00, 154.73) 02/07/2021   01:30:41  (  70.98, 155.02)   10.78                71
 02/07/2021   02:20:09   ( -70.79, -37.60) 02/07/2021   02:20:12  ( -70.81, -37.61)    1.57                 3
 02/07/2021   03:10:52   (  70.63, 129.97) 02/07/2021   03:09:40  (  70.65, 129.80)    6.50                72
 02/09/2021   17:45:56   (  71.28, -89.82) 02/09/2021   17:47:06  (  71.16, -88.81)   38.36                70
 02/09/2021   18:36:30   ( -70.80,  78.31) 02/09/2021   18:36:40  ( -70.84,  78.31)    3.38                10
 02/09/2021   19:27:14   (  70.70,-114.21) 02/09/2021   19:26:07  (  70.73,-114.20)    3.22                67
 02/12/2021   10:02:20   (  71.50,  25.71) 02/12/2021   10:03:29  (  71.40,  27.46)   62.74                69
 02/12/2021   10:52:50   ( -70.82,-165.78) 02/12/2021   10:53:08  ( -70.80,-165.86)    3.07                18
 02/12/2021   11:43:34   (  70.72,   1.69) 02/12/2021   11:42:35  (  70.70,   1.63)    3.37                59
 02/15/2021   02:18:46   (  71.78, 141.14) 02/15/2021   02:19:52  (  71.69, 143.81)   93.84                66
 02/15/2021   03:09:11   ( -70.83, -49.87) 02/15/2021   03:09:36  ( -70.82, -49.95)    2.86                25
 02/15/2021   03:59:55   (  70.74, 117.58) 02/15/2021   03:59:02  (  70.77, 117.62)    3.28                53