Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2021 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)
 11/29/2021   10:38:53   (  -0.00,-137.20) (  -0.78,-133.76)  391.89                80
 11/30/2021   22:58:45   (   0.01,-137.19) (  -0.43,-139.19)  228.32                80
 12/01/2021   22:43:02   (   0.00,-137.18) (   0.56,-134.75)  277.80                80
 12/03/2021   11:02:42   (  -0.00,-137.17) (   0.70,-140.13)  338.47                80
 12/04/2021   10:47:01   (   0.00,-137.15) (  -0.35,-135.69)  166.98                80
 12/05/2021   23:06:51   (  -0.00,-137.13) (  -0.91,-141.12)  455.13                80
 12/06/2021   22:51:09   (  -0.01,-137.11) (   0.09,-136.67)   49.83                80
 12/09/2021   10:55:08   (   0.01,-137.06) (   0.11,-137.62)   62.90                80
 12/10/2021   10:34:05   (   0.01,-137.04) (  -0.88,-133.17)  441.84                80
 12/11/2021   22:56:35   (  -0.00,-137.01) (  -0.37,-138.60)  180.81                80
 12/12/2021   22:40:53   (  -0.00,-136.99) (   0.63,-134.15)  323.90                80