Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 7 23.  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)
 07/24/2022   16:44:02   ( -72.43, 107.56) 07/24/2022   16:45:12  ( -72.32, 108.65)   38.64                70
 07/24/2022   17:34:41   (  72.00, -84.29) 07/24/2022   17:34:43  (  72.01, -84.25)    2.53                 2
 07/24/2022   18:25:23   ( -71.90,  83.21) 07/24/2022   18:24:13  ( -71.90,  83.18)    0.96                70
 07/27/2022   08:11:06   (  72.36,  55.95) 07/27/2022   08:12:17  (  72.23,  56.74)   29.91                71
 07/27/2022   09:01:43   ( -72.00,-136.04) 07/27/2022   09:01:49  ( -72.01,-136.02)    1.27                 6
 07/27/2022   09:52:29   (  71.93,  31.40) 07/27/2022   09:51:16  (  71.92,  31.46)    2.40                73
 07/29/2022   23:38:09   ( -72.46,   4.00) 07/29/2022   23:39:19  ( -72.39,   5.26)   42.95                70
 07/30/2022   00:28:47   (  71.99, 172.24) 07/30/2022   00:28:52  (  71.98, 172.16)    3.13                 5
 07/30/2022   01:19:30   ( -71.94, -20.35) 07/30/2022   01:18:21  ( -71.92, -20.31)    2.39                69
 08/01/2022   15:05:13   (  72.41, -47.64) 08/01/2022   15:06:24  (  72.31, -46.66)   35.18                71
 08/01/2022   15:55:49   ( -72.00, 120.49) 08/01/2022   15:55:58  ( -71.98, 120.40)    3.60                 9
 08/01/2022   16:46:35   (  71.94, -72.09) 08/01/2022   16:45:24  (  71.94, -72.04)    1.74                71
 08/04/2022   06:32:18   ( -72.57, -99.69) 08/04/2022   06:33:27  ( -72.47, -98.12)   53.55                69
 08/04/2022   07:22:54   (  72.01,  68.73) 08/04/2022   07:23:01  (  72.00,  68.66)    2.54                 7
 08/04/2022   08:13:37   ( -71.95,-123.84) 08/04/2022   08:12:30  ( -71.95,-123.79)    1.49                67