Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 11 16.  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)
 11/18/2020   14:46:55   ( -71.39, 134.35) 11/18/2020   14:48:03  ( -71.27, 136.20)   67.09                68
 11/18/2020   15:37:26   (  70.65, -57.09) 11/18/2020   15:37:39  (  70.68, -57.07)    3.45                13
 11/18/2020   16:28:08   ( -70.55, 110.39) 11/18/2020   16:27:09  ( -70.57, 110.39)    1.63                59
 11/21/2020   07:03:22   ( -71.65,-110.20) 11/21/2020   07:04:28  ( -71.53,-107.49)   96.17                66
 11/21/2020   07:53:48   (  70.66,  58.81) 11/21/2020   07:54:09  (  70.68,  58.79)    1.65                21
 11/21/2020   08:44:30   ( -70.56,-133.70) 11/21/2020   08:43:39  ( -70.56,-133.74)    1.51                51
 11/24/2020   00:10:10   (  70.67, 174.72) 11/24/2020   00:10:39  (  70.66, 174.65)    2.82                29
 11/24/2020   01:00:53   ( -70.62, -17.88) 11/24/2020   01:00:08  ( -70.61, -17.80)    3.28                45
 11/26/2020   16:26:32   (  70.69, -69.38) 11/26/2020   16:27:08  (  70.70, -69.42)    1.88                36
 11/26/2020   17:17:14   ( -70.58,  98.11) 11/26/2020   17:16:38  ( -70.59,  98.06)    2.62                36
 11/29/2020   08:42:53   (  70.70,  46.52) 11/29/2020   08:43:36  (  70.73,  46.50)    3.13                43
 11/29/2020   09:33:36   ( -70.64,-146.07) 11/29/2020   09:33:06  ( -70.63,-146.01)    2.74                30