Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 4 5.  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   08:04:21   ( -72.53,-123.70) 04/07/2022   08:05:28  ( -72.44,-121.47)   75.27                67
 04/07/2022   08:54:54   (  71.81,  45.02) 04/07/2022   08:55:05  (  71.81,  45.06)    1.44                11
 04/07/2022   09:45:36   ( -71.70,-147.45) 04/07/2022   09:44:35  ( -71.70,-147.50)    1.66                61
 04/09/2022   23:31:25   (  72.30,-174.98) 04/09/2022   23:32:35  (  72.21,-173.66)   45.82                70
 04/10/2022   00:22:00   ( -71.81,  -6.73) 04/10/2022   00:22:10  ( -71.83,  -6.69)    2.57                10
 04/10/2022   01:12:45   (  71.71, 160.76) 04/10/2022   01:11:37  (  71.73, 160.79)    2.46                68
 04/12/2022   14:58:30   ( -72.29, 133.28) 04/12/2022   14:59:40  ( -72.16, 134.47)   43.33                70
 04/12/2022   15:49:07   (  71.79, -58.45) 04/12/2022   15:49:12  (  71.79, -58.53)    2.70                 5
 04/12/2022   16:39:50   ( -71.71, 109.01) 04/12/2022   16:38:41  ( -71.73, 109.02)    2.73                69
 04/15/2022   06:25:34   (  72.08,  81.93) 04/15/2022   06:26:45  (  71.98,  82.40)   19.41                71
 04/15/2022   07:16:14   ( -71.84,-110.30) 04/15/2022   07:16:16  ( -71.83,-110.24)    2.46                 2
 04/15/2022   08:06:57   (  71.65,  57.37) 04/15/2022   08:05:44  (  71.67,  57.14)    8.25                73
 04/17/2022   21:52:38   ( -71.97,  30.38) 04/17/2022   21:53:50  ( -71.95,  30.57)    6.95                72
 04/17/2022   22:43:22   (  71.84,-162.06) 04/17/2022   22:43:17  (  71.84,-161.97)    3.27                 5