Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 11 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/29/2019   22:27:03   (   0.00,-137.20) (   0.51,-134.92)  259.15                80
 12/01/2019   10:51:14   (   0.00,-137.19) (   0.69,-140.12)  334.77                80
 12/02/2019   10:29:39   (  -0.01,-137.18) (  -0.39,-135.56)  185.66                80
 12/03/2019   22:53:58   (   0.00,-137.17) (  -0.83,-140.78)  412.57                80
 12/04/2019   22:32:23   (   0.01,-137.16) (   0.25,-136.22)  107.71                80
 12/06/2019   10:56:35   (  -0.00,-137.14) (   0.95,-141.42)  486.80                80
 12/07/2019   10:34:59   (  -0.01,-137.13) (  -0.07,-136.84)   33.14                80
 12/09/2019   22:40:22   (  -0.00,-137.09) (  -0.12,-137.49)   46.41                80
 12/10/2019   22:18:46   (   0.00,-137.07) (   0.90,-132.91)  472.98                80
 12/12/2019   10:42:59   (   0.01,-137.04) (   0.24,-138.12)  123.22                80