Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 4 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)
 04/07/2020   09:55:49   (  71.29,  26.62) 04/07/2020   09:56:57  (  71.16,  28.56)   70.90                68
 04/07/2020   10:46:18   ( -70.53,-164.78) 04/07/2020   10:46:37  ( -70.51,-164.81)    2.74                19
 04/07/2020   11:37:01   (  70.40,   2.74) 04/07/2020   11:36:04  (  70.40,   2.68)    2.20                57
 04/10/2020   02:12:16   (  71.44, 142.27) 04/10/2020   02:13:22  (  71.35, 144.74)   88.37                66
 04/10/2020   03:02:41   ( -70.52, -48.86) 04/10/2020   03:03:04  ( -70.54, -48.89)    2.23                23
 04/10/2020   03:53:25   (  70.44, 118.57) 04/10/2020   03:52:31  (  70.43, 118.60)    1.57                54
 04/12/2020   19:19:05   ( -70.51,  67.05) 04/12/2020   19:19:33  ( -70.53,  66.98)    3.54                28
 04/12/2020   20:09:49   (  70.44,-125.51) 04/12/2020   20:09:00  (  70.42,-125.54)    1.84                49
 04/15/2020   11:35:30   ( -70.56,-177.12) 04/15/2020   11:36:02  ( -70.55,-177.13)    1.79                32
 04/15/2020   12:26:13   (  70.43,  -9.60) 04/15/2020   12:25:29  (  70.43,  -9.66)    2.19                44
 04/18/2020   03:51:54   ( -70.56, -61.21) 04/18/2020   03:52:31  ( -70.58, -61.22)    1.96                37
 04/18/2020   04:42:38   (  70.48, 106.23) 04/18/2020   04:41:58  (  70.46, 106.25)    2.31                40
 04/20/2020   20:08:17   ( -70.56,  54.70) 04/20/2020   20:09:00  ( -70.57,  54.64)    2.48                43
 04/20/2020   20:59:01   (  70.48,-137.86) 04/20/2020   20:58:27  (  70.45,-137.89)    3.09                34