Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 11 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/28/2019   22:48:38   (  -0.00,-137.20) (  -0.50,-139.50)  261.52                80
 11/29/2019   22:27:03   (   0.00,-137.20) (   0.52,-134.93)  259.17                80
 12/01/2019   10:51:14   (   0.00,-137.19) (   0.67,-140.12)  334.75                80
 12/02/2019   10:29:39   (  -0.01,-137.18) (  -0.35,-135.55)  185.69                80
 12/03/2019   22:53:58   (   0.00,-137.17) (  -0.81,-140.78)  412.40                80
 12/04/2019   22:32:23   (   0.01,-137.16) (   0.21,-136.21)  107.86                80
 12/06/2019   10:56:35   (  -0.00,-137.15) (   0.93,-141.42)  486.64                80
 12/07/2019   10:34:59   (  -0.01,-137.13) (  -0.09,-136.84)   33.40                80
 12/09/2019   22:40:22   (  -0.00,-137.09) (  -0.11,-137.49)   45.98                80
 12/10/2019   22:18:47   (   0.00,-137.07) (   0.92,-132.92)  473.35                80