Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 4 17.  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)
 04/17/2022   21:52:37   ( -71.95,  30.44) 04/17/2022   21:53:49  ( -71.92,  30.68)    8.66                72
 04/17/2022   22:43:20   (  71.75,-161.89) 04/17/2022   22:43:17  (  71.78,-161.93)    3.03                 3
 04/17/2022   23:34:01   ( -71.57,   5.76) 04/17/2022   23:32:48  ( -71.60,   5.41)   13.09                73
 04/20/2022   13:19:43   (  71.85, -21.14) 04/20/2022   13:20:51  (  71.84, -21.21)    2.57                68
 04/20/2022   14:10:26   ( -71.76, 146.35) 04/20/2022   14:10:20  ( -71.78, 146.32)    2.85                 6
 04/20/2022   15:01:04   (  71.31, -45.54) 04/20/2022   14:59:53  (  71.36, -46.74)   43.16                71
 04/23/2022   04:46:49   ( -71.85, -72.90) 04/23/2022   04:47:54  ( -71.83, -72.98)    3.46                65
 04/23/2022   05:37:34   (  71.77,  94.55) 04/23/2022   05:37:20  (  71.79,  94.59)    1.77                14
 04/23/2022   06:28:07   ( -71.16, -97.03) 04/23/2022   06:26:58  ( -71.24, -98.68)   59.99                69
 04/25/2022   20:13:56   (  71.88,-124.71) 04/25/2022   20:14:52  (  71.87,-124.65)    2.28                56
 04/25/2022   21:04:39   ( -71.78,  42.80) 04/25/2022   21:04:22  ( -71.77,  42.79)    1.34                17
 04/25/2022   21:55:08   (  70.88,-148.30) 04/25/2022   21:54:02  (  70.96,-150.88)   94.28                66
 04/28/2022   11:41:02   ( -71.88,-176.47) 04/28/2022   11:41:54  ( -71.89,-176.38)    3.20                52
 04/28/2022   12:31:46   (  71.77,  -8.95) 04/28/2022   12:31:21  (  71.79,  -8.91)    2.04                25
 05/01/2022   03:08:08   (  71.84, 131.86) 05/01/2022   03:08:54  (  71.84, 131.79)    2.43                46