Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 6 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/05/2020   10:09:13   (  -0.00,-128.02) (   0.29,-129.34)  149.88                80
 06/06/2020   09:47:37   (  -0.02,-127.99) (  -0.71,-124.75)  368.71                80
 06/07/2020   22:09:16   (  -0.00,-127.93) (  -0.45,-129.99)  233.52                80
 06/08/2020   21:53:00   (   0.01,-127.91) (   0.55,-125.40)  285.47                80
 06/10/2020   10:14:29   (   0.01,-127.89) (   0.62,-130.59)  307.83                80
 06/11/2020   09:52:53   (   0.00,-127.86) (  -0.44,-126.02)  210.63                80
 06/12/2020   22:14:32   (  -0.02,-127.79) (  -0.78,-131.24)  392.57                80
 06/13/2020   21:58:15   (  -0.01,-127.76) (   0.22,-126.65)  126.29                80
 06/15/2020   10:19:45   (   0.03,-127.75) (   0.96,-131.84)  466.70                80
 06/16/2020   09:58:09   (   0.01,-127.72) (  -0.10,-127.27)   51.41                80
 06/18/2020   22:02:20   (  -0.02,-127.60) (  -0.11,-127.90)   35.33                 9