Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 4 6.  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)
 04/07/2022   08:04:20   ( -72.51,-123.64) 04/07/2022   08:05:28  ( -72.42,-121.51)   71.98                68
 04/07/2022   08:54:53   (  71.78,  45.07) 04/07/2022   08:55:05  (  71.79,  45.02)    2.00                12
 04/07/2022   09:45:36   ( -71.72,-147.49) 04/07/2022   09:44:34  ( -71.73,-147.44)    2.12                62
 04/09/2022   23:31:25   (  72.32,-175.02) 04/09/2022   23:32:35  (  72.19,-173.69)   47.25                70
 04/10/2022   00:21:59   ( -71.79,  -6.68) 04/10/2022   00:22:10  ( -71.81,  -6.72)    3.05                11
 04/10/2022   01:12:45   (  71.73, 160.72) 04/10/2022   01:11:37  (  71.71, 160.75)    2.60                68
 04/12/2022   14:58:30   ( -72.27, 133.33) 04/12/2022   14:59:40  ( -72.19, 134.53)   41.70                70
 04/12/2022   15:49:08   (  71.81, -58.50) 04/12/2022   15:49:12  (  71.82, -58.47)    1.28                 4
 04/12/2022   16:39:51   ( -71.73, 108.97) 04/12/2022   16:38:42  ( -71.71, 108.98)    2.38                69
 04/15/2022   06:25:33   (  72.05,  81.98) 04/15/2022   06:26:45  (  71.97,  82.37)   16.63                72
 04/15/2022   07:16:13   ( -71.81,-110.25) 04/15/2022   07:16:16  ( -71.81,-110.27)    1.10                 3
 04/15/2022   08:06:56   (  71.62,  57.41) 04/15/2022   08:05:44  (  71.65,  57.11)   11.14                72
 04/17/2022   21:52:38   ( -72.00,  30.33) 04/17/2022   21:53:50  ( -71.93,  30.54)   10.56                72
 04/17/2022   22:43:21   (  71.82,-162.02) 04/17/2022   22:43:17  (  71.83,-162.00)    1.14                 4