Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2021 9 7.  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)
 09/09/2021   15:42:23   (  71.51, -57.90) 09/09/2021   15:43:34  (  71.45, -57.40)   19.13                71
 09/09/2021   16:33:01   ( -71.24, 109.89) 09/09/2021   16:33:06  ( -71.22, 109.88)    2.13                 5
 09/09/2021   17:23:45   (  71.15, -82.64) 09/09/2021   17:22:33  (  71.13, -82.63)    2.64                72
 09/12/2021   07:58:49   (  71.92,  57.28) 09/12/2021   07:59:57  (  71.81,  59.09)   63.77                68
 09/12/2021   08:49:19   ( -71.24,-134.16) 09/12/2021   08:49:35  ( -71.26,-134.18)    2.17                16
 09/12/2021   09:40:03   (  71.15,  33.31) 09/12/2021   09:39:02  (  71.16,  33.30)    1.19                61
 09/15/2021   01:05:37   ( -71.30, -18.31) 09/15/2021   01:06:03  ( -71.29, -18.25)    2.11                26
 09/15/2021   01:56:21   (  71.20, 149.16) 09/15/2021   01:55:30  (  71.19, 149.23)    2.85                51
 09/17/2021   17:21:55   ( -71.30,  97.63) 09/17/2021   17:22:32  ( -71.32,  97.67)    2.55                37
 09/17/2021   18:12:39   (  71.21, -94.90) 09/17/2021   18:11:59  (  71.21, -94.85)    1.79                40
 09/20/2021   09:38:13   ( -71.31,-146.43) 09/20/2021   09:39:02  ( -71.29,-146.50)    3.21                49
 09/20/2021   10:28:57   (  71.21,  21.04) 09/20/2021   10:28:28  (  71.23,  21.06)    2.36                29