Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2025 4 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/20/2025   22:47:27   (   0.05,  61.39) (  -0.39,  63.32)  219.60                80
 04/22/2025   11:06:37   (  -0.03,  61.43) (  -0.79,  58.08)  381.22                80
 04/23/2025   10:50:29   (  -0.04,  61.44) (   0.24,  62.65)  138.22                80
 04/24/2025   23:09:30   (   0.03,  61.44) (   0.93,  57.45)  455.65                80
 04/25/2025   22:53:22   (   0.03,  61.46) (  -0.10,  62.01)   63.75                80
 04/28/2025   10:56:23   (  -0.02,  61.51) (  -0.03,  61.34)   19.02                80
 04/29/2025   10:37:34   (  -0.03,  61.53) (   0.95,  65.92)  499.72                80
 04/30/2025   22:56:35   (   0.00,  61.56) (   0.20,  60.72)   95.85                80
 05/01/2025   22:40:27   (   0.01,  61.58) (  -0.84,  65.28)  422.71                80
 05/03/2025   10:59:36   (   0.01,  61.62) (  -0.37,  60.05)  179.41                80
 05/04/2025   10:43:28   (  -0.00,  61.65) (   0.67,  64.62)  339.05                80