Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 1 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/21/2022   11:04:53   (  -0.04,-137.22) (   0.54,-139.68)  280.63                80
 01/22/2022   10:43:51   (  -0.04,-137.23) (  -0.47,-135.23)  226.64                80
 01/23/2022   23:06:20   (   0.04,-137.22) (  -0.75,-140.66)  391.87                80
 01/24/2022   22:50:37   (   0.04,-137.22) (   0.27,-136.21)  115.08                80
 01/26/2022   11:12:59   (  -0.04,-137.22) (   0.97,-141.60)  499.99                80
 01/27/2022   10:51:56   (  -0.03,-137.21) (  -0.04,-137.16)    6.30                80
 01/29/2022   22:56:02   (  -0.00,-137.18) (  -0.21,-138.12)  107.58                80
 01/30/2022   22:40:19   (  -0.02,-137.17) (   0.75,-133.67)  398.48                80
 02/01/2022   11:02:41   (   0.02,-137.15) (   0.43,-139.07)  218.42                80
 02/02/2022   10:41:38   (   0.01,-137.13) (  -0.58,-134.62)  286.96                80
 02/03/2022   23:04:07   (  -0.01,-137.11) (  -0.67,-140.04)  334.14                80