Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 4 20.  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)
 04/20/2022   13:19:44   (  71.88, -21.19) 04/20/2022   13:20:51  (  71.86, -21.18)    1.78                67
 04/20/2022   14:10:27   ( -71.79, 146.28) 04/20/2022   14:10:20  ( -71.80, 146.35)    2.24                 7
 04/20/2022   15:01:04   (  71.29, -45.50) 04/20/2022   14:59:54  (  71.32, -46.80)   46.52                70
 04/23/2022   04:46:49   ( -71.88, -72.94) 04/23/2022   04:47:53  ( -71.85, -72.95)    2.50                64
 04/23/2022   05:37:33   (  71.74,  94.61) 04/23/2022   05:37:20  (  71.76,  94.53)    3.01                13
 04/23/2022   06:28:07   ( -71.19, -97.07) 04/23/2022   06:26:57  ( -71.26, -98.65)   57.11                70
 04/25/2022   20:13:56   (  71.84,-124.64) 04/25/2022   20:14:53  (  71.85,-124.69)    2.11                57
 04/25/2022   21:04:40   ( -71.79,  42.77) 04/25/2022   21:04:22  ( -71.79,  42.84)    2.48                18
 04/25/2022   21:55:09   (  70.89,-148.32) 04/25/2022   21:54:03  (  70.93,-150.92)   94.58                66
 04/28/2022   11:41:03   ( -71.89,-176.47) 04/28/2022   11:41:55  ( -71.88,-176.41)    2.67                52
 04/28/2022   12:31:47   (  71.77,  -8.95) 04/28/2022   12:31:22  (  71.77,  -8.94)    0.58                25
 05/01/2022   03:08:09   (  71.82, 131.89) 05/01/2022   03:08:55  (  71.84, 131.79)    3.79                46
 05/01/2022   03:58:53   ( -71.76, -60.68) 05/01/2022   03:58:24  ( -71.79, -60.67)    2.95                29
 05/03/2022   18:35:15   ( -71.86,  80.06) 05/03/2022   18:35:56  ( -71.84,  80.04)    2.53                41
 05/03/2022   19:25:59   (  71.76,-112.43) 05/03/2022   19:25:22  (  71.79,-112.41)    3.40                37