Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 1 20.  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)
 01/20/2020   17:09:05   ( -70.61,  99.29) 01/20/2020   17:10:16  ( -70.57,  99.55)   10.51                71
 01/20/2020   17:59:47   (  70.38, -93.04) 01/20/2020   17:59:44  (  70.41, -93.04)    3.46                 3
 01/20/2020   18:50:28   ( -70.29,  74.43) 01/20/2020   18:49:14  ( -70.30,  74.43)    1.59                74
 01/23/2020   09:25:32   ( -70.71,-144.98) 01/23/2020   09:26:43  ( -70.64,-144.46)   20.60                71
 01/23/2020   10:16:12   (  70.38,  22.85) 01/23/2020   10:16:13  (  70.37,  22.78)    2.82                 1
 01/23/2020   11:06:53   ( -70.29,-169.67) 01/23/2020   11:05:43  ( -70.27,-169.74)    3.39                70
 01/26/2020   01:41:59   ( -70.82, -29.25) 01/26/2020   01:43:10  ( -70.71, -28.47)   30.76                71
 01/26/2020   02:32:37   (  70.39, 138.74) 01/26/2020   02:32:41  (  70.39, 138.68)    2.33                 4
 01/26/2020   03:23:17   ( -70.29, -53.77) 01/26/2020   03:22:10  ( -70.28, -53.84)    2.46                67
 01/28/2020   17:58:25   ( -70.92,  86.47) 01/28/2020   17:59:35  ( -70.83,  87.59)   41.97                70
 01/28/2020   18:49:01   (  70.40,-105.37) 01/28/2020   18:49:08  (  70.39,-105.42)    2.16                 7
 01/28/2020   19:39:42   ( -70.29,  62.12) 01/28/2020   19:38:38  ( -70.29,  62.06)    2.41                64
 01/31/2020   10:14:52   ( -71.03,-157.81) 01/31/2020   10:16:02  ( -70.90,-156.43)   52.06                70
 01/31/2020   11:05:26   (  70.41,  10.52) 01/31/2020   11:05:36  (  70.40,  10.46)    2.23                10
 01/31/2020   11:56:07   ( -70.29, 178.02) 01/31/2020   11:55:06  ( -70.30, 177.95)    2.67                61
 02/03/2020   02:31:19   ( -71.14, -42.09) 02/03/2020   02:32:28  ( -71.01, -40.38)   63.49                69
 02/03/2020   03:21:51   (  70.42, 126.41) 02/03/2020   03:22:04  (  70.40, 126.35)    2.75                13