Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 1 20.  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   11:04:54   (  -0.04,-137.23) (   0.50,-139.69)  280.48                80
 01/22/2022   10:43:51   (  -0.04,-137.23) (  -0.51,-135.24)  226.79                80
 01/23/2022   23:06:21   (   0.04,-137.22) (  -0.71,-140.67)  391.90                80
 01/24/2022   22:50:37   (   0.04,-137.22) (   0.25,-136.21)  115.08                80
 01/26/2022   11:12:59   (  -0.04,-137.22) (   0.93,-141.61)  499.81                80
 01/27/2022   10:51:56   (  -0.03,-137.21) (  -0.02,-137.15)    6.83                80
 01/29/2022   22:56:02   (  -0.00,-137.18) (  -0.22,-138.12)  107.55                80
 01/30/2022   22:40:19   (  -0.02,-137.17) (   0.79,-133.68)  398.56                80
 02/01/2022   11:02:41   (   0.02,-137.15) (   0.45,-139.06)  218.16                80
 02/02/2022   10:41:38   (   0.01,-137.14) (  -0.57,-134.62)  287.21                80