Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2021 11 24.  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)
 11/26/2021   07:40:22   (  71.63,  63.04) 11/26/2021   07:41:33  (  71.57,  63.29)   10.89                71
 11/26/2021   08:31:03   ( -71.46,-129.35) 11/26/2021   08:31:03  ( -71.46,-129.26)    3.19                 0
 11/26/2021   09:21:45   (  71.18,  38.45) 11/26/2021   09:20:32  (  71.25,  38.05)   16.36                73
 11/28/2021   23:07:33   ( -71.55,  11.40) 11/28/2021   23:08:38  ( -71.53,  11.46)    2.83                65
 11/28/2021   23:58:18   (  71.43, 178.92) 11/28/2021   23:58:05  (  71.43, 178.94)    0.58                13
 11/29/2021   00:48:52   ( -70.89, -12.84) 11/29/2021   00:47:42  ( -70.94, -14.21)   50.03                70
 12/01/2021   14:34:49   (  71.51, -40.33) 12/01/2021   14:35:40  (  71.49, -40.36)    1.93                51
 12/01/2021   15:25:32   ( -71.43, 127.12) 12/01/2021   15:25:09  ( -71.44, 127.19)    2.68                23
 12/04/2021   06:02:04   ( -71.50, -92.11) 12/04/2021   06:02:44  ( -71.50, -92.11)    0.29                40
 12/04/2021   06:52:49   (  71.39,  75.39) 12/04/2021   06:52:11  (  71.39,  75.36)    1.01                38
 12/06/2021   21:29:22   (  71.51,-143.94) 12/06/2021   21:29:44  (  71.50,-143.86)    2.67                22
 12/06/2021   22:20:05   ( -71.42,  23.54) 12/06/2021   22:19:14  ( -71.40,  23.60)    3.00                51