Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 7 21.  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)
 07/22/2022   01:16:58   (  72.30, 159.55) 07/22/2022   01:18:09  (  72.19, 160.19)   24.72                71
 07/22/2022   02:07:36   ( -72.00, -32.55) 07/22/2022   02:07:40  ( -72.02, -32.48)    3.12                 4
 07/22/2022   02:58:21   (  71.87, 135.00) 07/22/2022   02:57:08  (  71.87, 134.91)    2.97                73
 07/24/2022   16:44:01   ( -72.40, 107.61) 07/24/2022   16:45:12  ( -72.31, 108.63)   35.67                71
 07/24/2022   17:34:41   (  72.02, -84.34) 07/24/2022   17:34:43  (  72.00, -84.28)    3.16                 2
 07/24/2022   18:25:23   ( -71.92,  83.16) 07/24/2022   18:24:12  ( -71.94,  83.25)    3.60                71
 07/27/2022   08:11:06   (  72.38,  55.91) 07/27/2022   08:12:17  (  72.23,  56.73)   32.11                71
 07/27/2022   09:01:43   ( -72.02,-136.07) 07/27/2022   09:01:49  ( -72.01,-136.02)    1.95                 6
 07/27/2022   09:52:28   (  71.90,  31.46) 07/27/2022   09:51:16  (  71.92,  31.45)    1.96                72
 07/29/2022   23:38:10   ( -72.48,   3.98) 07/29/2022   23:39:20  ( -72.41,   5.28)   44.51                70
 07/30/2022   00:28:48   (  72.01, 172.21) 07/30/2022   00:28:53  (  71.99, 172.18)    2.11                 5
 07/30/2022   01:19:31   ( -71.95, -20.37) 07/30/2022   01:18:22  ( -71.94, -20.28)    3.42                69
 08/01/2022   15:05:15   (  72.47, -47.76) 08/01/2022   15:06:25  (  72.33, -46.62)   41.37                70
 08/01/2022   15:55:50   ( -72.00, 120.48) 08/01/2022   15:55:59  ( -72.01, 120.44)    1.52                 9
 08/01/2022   16:46:35   (  71.89, -72.01) 08/01/2022   16:45:26  (  71.91, -72.09)    3.51                69