Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2025 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)
 07/18/2025   06:37:32   ( -75.99, -91.10) 07/18/2025   06:37:50  ( -76.00, -91.20)    3.10                18
 07/18/2025   07:28:17   (  75.97,  76.25) 07/18/2025   07:27:16  (  75.99,  76.39)    3.97                61
 07/20/2025   22:03:38   (  76.46,-144.25) 07/20/2025   22:04:45  (  76.38,-141.75)   65.74                67
 07/20/2025   22:54:12   ( -76.00,  24.76) 07/20/2025   22:54:20  ( -76.02,  24.72)    1.91                 8
 07/20/2025   23:44:56   (  75.94,-167.73) 07/20/2025   23:43:47  (  75.95,-167.85)    3.38                69
 07/23/2025   14:20:09   (  76.07, -26.91) 07/23/2025   14:21:21  (  76.09, -26.82)    2.87                72
 07/23/2025   15:10:51   ( -76.02, 140.60) 07/23/2025   15:10:49  ( -76.02, 140.60)    0.27                 2
 07/23/2025   16:01:30   (  75.73, -51.10) 07/23/2025   16:00:20  (  75.75, -52.57)   40.44                70
 07/26/2025   06:36:47   (  76.05,  89.08) 07/26/2025   06:37:50  (  76.07,  89.02)    3.09                63
 07/26/2025   07:27:30   ( -76.00,-103.41) 07/26/2025   07:27:19  ( -76.00,-103.55)    3.89                11
 07/28/2025   22:53:27   (  76.07,-155.10) 07/28/2025   22:54:19  (  76.09,-155.03)    3.02                52
 07/28/2025   23:44:10   ( -76.02,  12.40) 07/28/2025   23:43:48  ( -76.03,  12.41)    0.90                22
 07/31/2025   15:10:06   (  76.06, -39.14) 07/31/2025   15:10:49  (  76.06, -39.26)    3.30                43
 07/31/2025   16:00:50   ( -76.05, 128.20) 07/31/2025   16:00:17  ( -76.04, 128.33)    3.77                33