Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2025 9 15.  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)
 09/17/2025   17:38:08   ( -76.78, 102.41) 09/17/2025   17:39:13  ( -76.73, 105.83)   87.25                65
 09/17/2025   18:28:41   (  76.22, -88.09) 09/17/2025   18:28:49  (  76.24, -88.18)    2.83                 8
 09/17/2025   19:19:24   ( -76.19,  79.35) 09/17/2025   19:18:17  ( -76.21,  79.36)    2.22                67
 09/20/2025   09:54:40   ( -76.47,-140.44) 09/20/2025   09:55:51  ( -76.37,-139.52)   26.74                71
 09/20/2025   10:45:21   (  76.27,  27.64) 09/20/2025   10:45:19  (  76.25,  27.75)    3.36                 2
 09/20/2025   11:36:01   ( -76.10,-164.41) 09/20/2025   11:34:48  ( -76.18,-164.85)   15.07                73
 09/23/2025   02:11:15   ( -76.30, -23.86) 09/23/2025   02:12:23  ( -76.28, -23.93)    2.75                68
 09/23/2025   03:01:59   (  76.23, 143.69) 09/23/2025   03:01:49  (  76.26, 143.64)    3.10                10
 09/23/2025   03:52:32   ( -75.74, -47.24) 09/23/2025   03:51:26  ( -75.80, -50.15)   79.94                66
 09/25/2025   18:27:54   ( -76.30,  92.02) 09/25/2025   18:28:52  ( -76.32,  92.07)    2.03                58
 09/25/2025   19:18:38   (  76.25,-100.44) 09/25/2025   19:18:19  (  76.25,-100.52)    1.95                19
 09/28/2025   10:44:32   ( -76.32,-152.11) 09/28/2025   10:45:21  ( -76.29,-152.13)    2.60                49
 09/28/2025   11:35:16   (  76.26,  15.40) 09/28/2025   11:34:47  (  76.27,  15.43)    0.87                29