Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2021 11 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)
 11/26/2021   07:40:22   (  71.59,  63.11) 11/26/2021   07:41:34  (  71.56,  63.27)    6.70                72
 11/26/2021   08:31:03   ( -71.43,-129.28) 11/26/2021   08:31:04  ( -71.44,-129.29)    1.59                 1
 11/26/2021   09:21:46   (  71.20,  38.43) 11/26/2021   09:20:33  (  71.23,  38.02)   15.16                73
 11/28/2021   23:07:32   ( -71.51,  11.47) 11/28/2021   23:08:38  ( -71.51,  11.43)    1.37                66
 11/28/2021   23:58:18   (  71.44, 178.89) 11/28/2021   23:58:05  (  71.41, 178.91)    3.01                13
 11/29/2021   00:48:52   ( -70.91, -12.87) 11/29/2021   00:47:41  ( -70.98, -14.15)   47.32                71
 12/01/2021   14:34:49   (  71.52, -40.36) 12/01/2021   14:35:39  (  71.53, -40.29)    2.64                50
 12/01/2021   15:25:31   ( -71.40, 127.18) 12/01/2021   15:25:09  ( -71.43, 127.16)    3.34                22
 12/04/2021   06:02:04   ( -71.51, -92.14) 12/04/2021   06:02:44  ( -71.49, -92.13)    2.82                40
 12/04/2021   06:52:49   (  71.41,  75.36) 12/04/2021   06:52:11  (  71.38,  75.34)    2.82                38
 12/06/2021   21:29:22   (  71.47,-143.87) 12/06/2021   21:29:45  (  71.49,-143.89)    2.29                23
 12/06/2021   22:20:05   ( -71.38,  23.60) 12/06/2021   22:19:15  ( -71.39,  23.58)    1.20                50