Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 7 18.  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)
 07/19/2022   09:49:53   ( -72.35,-148.82) 07/19/2022   09:51:04  ( -72.24,-147.96)   31.61                71
 07/19/2022   10:40:33   (  71.97,  19.24) 07/19/2022   10:40:34  (  71.99,  19.24)    2.14                 1
 07/19/2022   11:31:15   ( -71.88,-173.27) 07/19/2022   11:30:04  ( -71.87,-173.33)    1.98                71
 07/22/2022   01:16:58   (  72.32, 159.50) 07/22/2022   01:18:09  (  72.18, 160.18)   27.68                71
 07/22/2022   02:07:35   ( -71.97, -32.50) 07/22/2022   02:07:41  ( -71.96, -32.58)    2.91                 6
 07/22/2022   02:58:21   (  71.90, 134.95) 07/22/2022   02:57:08  (  71.87, 134.90)    3.38                73
 07/24/2022   16:44:02   ( -72.42, 107.56) 07/24/2022   16:45:13  ( -72.32, 108.65)   38.31                71
 07/24/2022   17:34:41   (  72.00, -84.29) 07/24/2022   17:34:44  (  72.01, -84.26)    1.78                 3
 07/24/2022   18:25:23   ( -71.90,  83.21) 07/24/2022   18:24:14  ( -71.90,  83.18)    1.08                69
 07/27/2022   08:11:07   (  72.41,  55.85) 07/27/2022   08:12:17  (  72.31,  56.87)   36.04                70
 07/27/2022   09:01:43   ( -72.00,-136.03) 07/27/2022   09:01:51  ( -71.99,-136.07)    1.79                 8
 07/27/2022   09:52:29   (  71.93,  31.40) 07/27/2022   09:51:17  (  71.94,  31.49)    3.34                72
 07/29/2022   23:38:11   ( -72.56,   3.81) 07/29/2022   23:39:20  ( -72.45,   5.35)   52.95                69
 07/30/2022   00:28:48   (  72.04, 172.15) 07/30/2022   00:28:53  (  72.03, 172.24)    3.40                 5
 07/30/2022   01:19:30   ( -71.93, -20.33) 07/30/2022   01:18:23  ( -71.92, -20.31)    1.13                67