Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 6 18.  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)
 06/18/2020   18:59:45   (  70.92,-108.58) 06/18/2020   19:00:56  (  70.85,-107.78)   30.13                71
 06/18/2020   19:50:21   ( -70.54,  59.36) 06/18/2020   19:50:30  ( -70.51,  59.35)    2.65                 9
 06/18/2020   20:41:05   (  70.44,-133.17) 06/18/2020   20:39:57  (  70.42,-133.15)    3.07                68
 06/21/2020   11:16:13   (  71.16,   6.91) 06/21/2020   11:17:22  (  71.09,   8.48)   57.08                69
 06/21/2020   12:06:45   ( -70.57, 175.22) 06/21/2020   12:07:00  ( -70.55, 175.28)    3.03                15
 06/21/2020   12:57:28   (  70.43, -17.24) 06/21/2020   12:56:27  (  70.45, -17.23)    2.00                61
 06/24/2020   03:32:41   (  71.46, 122.30) 06/24/2020   03:33:47  (  71.34, 124.76)   88.26                66
 06/24/2020   04:23:07   ( -70.55, -68.83) 06/24/2020   04:23:29  ( -70.58, -68.80)    3.30                22
 06/24/2020   05:13:51   (  70.47,  98.61) 06/24/2020   05:12:56  (  70.47,  98.69)    3.07                55
 06/26/2020   20:39:30   ( -70.53,  47.10) 06/26/2020   20:40:00  ( -70.55,  47.04)    3.18                30
 06/26/2020   21:30:14   (  70.46,-145.46) 06/26/2020   21:29:27  (  70.44,-145.48)    1.70                47
 06/29/2020   12:55:54   ( -70.57, 162.96) 06/29/2020   12:56:30  ( -70.57, 162.95)    0.47                36
 06/29/2020   13:46:37   (  70.45, -29.54) 06/29/2020   13:45:57  (  70.47, -29.56)    2.01                40