Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2021 11 26.  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   (  71.61,  63.08) 11/26/2021   07:41:33  (  71.59,  63.33)    8.92                71
 11/26/2021   08:31:03   ( -71.44,-129.31) 11/26/2021   08:31:04  ( -71.42,-129.32)    2.56                 1
 11/26/2021   09:21:45   (  71.16,  38.49) 11/26/2021   09:20:33  (  71.22,  37.99)   18.77                72
 11/28/2021   23:07:33   ( -71.53,  11.44) 11/28/2021   23:08:38  ( -71.55,  11.49)    3.04                65
 11/28/2021   23:58:18   (  71.41, 178.96) 11/28/2021   23:58:06  (  71.40, 178.88)    2.90                12
 11/29/2021   00:48:52   ( -70.87, -12.81) 11/29/2021   00:47:42  ( -70.96, -14.18)   50.85                70
 12/01/2021   14:34:49   (  71.49, -40.30) 12/01/2021   14:35:40  (  71.51, -40.32)    3.13                51
 12/01/2021   15:25:32   ( -71.41, 127.15) 12/01/2021   15:25:10  ( -71.41, 127.13)    1.18                22
 12/04/2021   06:02:04   ( -71.53, -92.17) 12/04/2021   06:02:43  ( -71.52, -92.08)    3.37                39
 12/04/2021   06:52:49   (  71.42,  75.33) 12/04/2021   06:52:10  (  71.42,  75.39)    2.38                39
 12/06/2021   21:29:22   (  71.49,-143.90) 12/06/2021   21:29:45  (  71.47,-143.92)    2.04                23
 12/06/2021   22:20:05   ( -71.40,  23.57) 12/06/2021   22:19:14  ( -71.42,  23.63)    3.35                51
 12/09/2021   12:06:04   (  71.96,  -3.89) 12/09/2021   12:07:14  (  71.84,  -2.69)   43.25                70
 12/09/2021   12:56:39   ( -71.45, 164.37) 12/09/2021   12:56:49  ( -71.47, 164.32)    3.26                10
 12/09/2021   13:47:24   (  71.35, -28.16) 12/09/2021   13:46:16  (  71.36, -28.22)    2.44                68