Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 11 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/29/2020   21:53:08   (   0.03,-127.90) (   0.58,-125.48)  275.07                80
 12/01/2020   10:17:17   (   0.01,-127.94) (   0.64,-130.66)  310.85                80
 12/02/2020   09:55:41   (  -0.01,-127.96) (  -0.46,-126.09)  213.81                80
 12/03/2020   22:19:57   (  -0.02,-127.99) (  -0.76,-131.30)  376.60                80
 12/04/2020   21:58:21   (  -0.00,-128.01) (   0.29,-126.72)  147.34                80
 12/06/2020   10:22:30   (   0.03,-128.04) (   0.88,-131.91)  440.14                80
 12/07/2020   10:00:54   (   0.01,-128.06) (  -0.17,-127.33)   83.83                80
 12/09/2020   22:03:34   (  -0.03,-128.10) (   0.01,-127.96)   16.62                80
 12/12/2020   10:08:45   (   0.05,-128.13) (   0.17,-128.55)   48.55                80