Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 8 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/23/2020   10:09:48   (  -0.05,-127.79) (   0.43,-129.88)  239.09                80
 08/24/2020   09:53:31   (  -0.05,-127.75) (  -0.59,-125.30)  278.76                80
 08/25/2020   22:12:28   (   0.05,-127.65) (  -0.62,-130.52)  328.18                80
 08/26/2020   21:56:12   (   0.05,-127.60) (   0.40,-125.94)  189.33                80
 08/28/2020   10:15:02   (  -0.06,-127.58) (   0.76,-131.13)  405.52                80
 08/29/2020   09:58:46   (  -0.06,-127.53) (  -0.26,-126.55)  111.70                80
 08/30/2020   22:17:44   (   0.07,-127.42) (  -0.89,-131.78)  496.13                80
 08/31/2020   22:01:28   (   0.07,-127.38) (   0.13,-127.20)   21.14                80
 09/03/2020   10:01:21   (  -0.07,-127.31) (   0.01,-127.81)   56.72                80
 09/04/2020   09:45:05   (  -0.07,-127.26) (  -1.00,-123.23)  460.45                80