Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 4 29.  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)
 04/30/2019   10:39:06   ( -70.63,-163.04) 04/30/2019   10:40:10  ( -70.61,-163.09)    2.53                64
 04/30/2019   11:29:50   (  70.51,   4.46) 04/30/2019   11:29:37  (  70.51,   4.40)    2.25                13
 04/30/2019   12:20:24   ( -70.04, 172.51) 04/30/2019   12:19:13  ( -70.07, 171.40)   42.24                71
 05/03/2019   02:55:33   ( -70.65, -47.19) 05/03/2019   02:56:39  ( -70.65, -47.16)    1.01                66
 05/03/2019   03:46:17   (  70.53, 120.30) 05/03/2019   03:46:06  (  70.54, 120.32)    1.35                11
 05/03/2019   04:36:52   ( -70.11, -71.72) 05/03/2019   04:35:41  ( -70.17, -72.60)   33.58                71
 05/05/2019   19:12:01   ( -70.67,  68.65) 05/05/2019   19:13:10  ( -70.67,  68.74)    3.00                69
 05/05/2019   20:02:45   (  70.56,-123.85) 05/05/2019   20:02:37  (  70.56,-123.78)    2.75                 8
 05/05/2019   20:53:22   ( -70.24,  43.96) 05/05/2019   20:52:10  ( -70.30,  43.46)   19.89                72
 05/08/2019   11:28:30   ( -70.75,-175.59) 05/08/2019   11:29:41  ( -70.73,-175.31)   10.38                71
 05/08/2019   12:19:12   (  70.53,  -7.93) 05/08/2019   12:19:10  (  70.51,  -7.99)    3.02                 2
 05/08/2019   13:09:53   ( -70.42, 159.56) 05/08/2019   13:08:40  ( -70.42, 159.49)    2.57                73
 05/11/2019   03:45:01   ( -70.93, -60.01) 05/11/2019   03:46:12  ( -70.83, -59.30)   28.08                71
 05/11/2019   04:35:40   (  70.56, 107.90) 05/11/2019   04:35:42  (  70.56, 107.93)    1.12                 2
 05/11/2019   05:26:21   ( -70.45, -84.60) 05/11/2019   05:25:12  ( -70.46, -84.58)    1.61                69