Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 5 25.  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)
 05/25/2020   15:41:42   ( -71.53, 119.85) 05/25/2020   15:42:47  ( -71.43, 122.60)   97.62                65
 05/25/2020   16:32:09   (  70.53, -71.14) 05/25/2020   16:32:29  (  70.52, -71.19)    2.39                20
 05/25/2020   17:22:50   ( -70.43,  96.33) 05/25/2020   17:21:58  ( -70.46,  96.36)    3.00                52
 05/28/2020   08:48:32   (  70.55,  44.74) 05/28/2020   08:48:57  (  70.54,  44.73)    0.52                25
 05/28/2020   09:39:13   ( -70.45,-147.78) 05/28/2020   09:38:27  ( -70.44,-147.79)    1.60                46
 05/31/2020   01:04:56   (  70.56, 160.62) 05/31/2020   01:05:26  (  70.57, 160.65)    1.07                30
 05/31/2020   01:55:37   ( -70.46, -31.89) 05/31/2020   01:54:56  ( -70.46, -31.87)    0.80                41
 06/02/2020   17:21:20   (  70.58, -83.50) 06/02/2020   17:21:55  (  70.59, -83.43)    2.39                35
 06/02/2020   18:12:01   ( -70.48,  83.99) 06/02/2020   18:11:25  ( -70.48,  84.04)    2.05                36
 06/05/2020   09:37:43   (  70.55,  32.46) 06/05/2020   09:38:25  (  70.55,  32.39)    2.64                42
 06/05/2020   10:28:25   ( -70.49,-160.12) 06/05/2020   10:27:54  ( -70.50,-160.04)    3.12                31