Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 7 19.  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  ( -72.23,-147.97)   31.61                71
 07/19/2022   10:40:33   (  71.97,  19.24) 07/19/2022   10:40:34  (  71.99,  19.23)    1.78                 1
 07/19/2022   11:31:15   ( -71.88,-173.27) 07/19/2022   11:30:04  ( -71.87,-173.34)    2.56                71
 07/22/2022   01:16:57   (  72.27, 159.60) 07/22/2022   01:18:09  (  72.17, 160.15)   21.74                72
 07/22/2022   02:07:35   ( -71.97, -32.50) 07/22/2022   02:07:40  ( -72.00, -32.51)    3.38                 5
 07/22/2022   02:58:20   (  71.84, 135.05) 07/22/2022   02:57:08  (  71.86, 134.88)    5.97                72
 07/24/2022   16:44:02   ( -72.42, 107.57) 07/24/2022   16:45:13  ( -72.29, 108.60)   37.83                71
 07/24/2022   17:34:41   (  71.99, -84.29) 07/24/2022   17:34:44  (  71.99, -84.30)    1.11                 3
 07/24/2022   18:25:23   ( -71.90,  83.21) 07/24/2022   18:24:13  ( -71.93,  83.23)    3.49                70
 07/27/2022   08:11:06   (  72.35,  55.96) 07/27/2022   08:12:17  (  72.28,  56.81)   30.10                71
 07/27/2022   09:01:43   ( -72.00,-136.03) 07/27/2022   09:01:50  ( -72.01,-136.04)    1.24                 7
 07/27/2022   09:52:29   (  71.93,  31.41) 07/27/2022   09:51:17  (  71.91,  31.44)    2.42                72
 07/29/2022   23:38:10   ( -72.50,   3.92) 07/29/2022   23:39:20  ( -72.41,   5.28)   46.81                70
 07/30/2022   00:28:47   (  71.98, 172.25) 07/30/2022   00:28:53  (  71.98, 172.16)    2.96                 6
 07/30/2022   01:19:30   ( -71.93, -20.33) 07/30/2022   01:18:22  ( -71.93, -20.29)    1.29                68
 08/01/2022   15:05:14   (  72.45, -47.72) 08/01/2022   15:06:24  (  72.38, -46.53)   40.88                70
 08/01/2022   15:55:50   ( -72.04, 120.42) 08/01/2022   15:55:59  ( -72.01, 120.44)    2.76                 9
 08/01/2022   16:46:35   (  71.93, -72.07) 08/01/2022   16:45:26  (  71.91, -72.10)    2.30                69