Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 10 21.  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)
 10/22/2020   19:12:38   (  71.59,-112.54) 10/22/2020   19:13:44  (  71.47,-109.89)   94.04                66
 10/22/2020   20:03:03   ( -70.63,  56.44) 10/22/2020   20:03:27  ( -70.65,  56.44)    2.48                24
 10/22/2020   20:53:47   (  70.55,-136.12) 10/22/2020   20:52:54  (  70.55,-136.06)    2.19                53
 10/25/2020   12:19:25   ( -70.62, 172.38) 10/25/2020   12:19:56  ( -70.64, 172.30)    3.22                31
 10/25/2020   13:10:09   (  70.55, -20.20) 10/25/2020   13:09:23  (  70.53, -20.20)    1.59                46
 10/28/2020   04:35:48   ( -70.67, -71.78) 10/28/2020   04:36:24  ( -70.68, -71.75)    1.94                36
 10/28/2020   05:26:30   (  70.55,  95.72) 10/28/2020   05:25:50  (  70.58,  95.74)    3.09                40
 10/30/2020   20:52:09   ( -70.66,  44.14) 10/30/2020   20:52:52  ( -70.67,  44.12)    1.26                43
 10/30/2020   21:42:52   (  70.55,-148.36) 10/30/2020   21:42:19  (  70.57,-148.39)    1.96                33
 11/02/2020   13:08:31   ( -70.66, 160.06) 11/02/2020   13:09:21  ( -70.67, 160.00)    2.32                50
 11/02/2020   13:59:14   (  70.56, -32.45) 11/02/2020   13:58:48  (  70.56, -32.52)    2.39                26