Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 6 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/03/2020   21:46:10   (   0.02,-128.04) (   0.88,-124.15)  443.53                14
 06/05/2020   10:09:13   (  -0.00,-128.02) (   0.30,-129.34)  149.73                80
 06/06/2020   09:47:38   (  -0.02,-128.00) (  -0.77,-124.77)  368.91                80
 06/07/2020   22:09:16   (  -0.00,-127.94) (  -0.46,-129.98)  233.35                80
 06/08/2020   21:52:59   (   0.01,-127.91) (   0.55,-125.40)  285.67                80
 06/10/2020   10:14:29   (   0.01,-127.89) (   0.63,-130.59)  307.44                80
 06/11/2020   09:52:53   (   0.00,-127.86) (  -0.44,-126.02)  211.08                80
 06/12/2020   22:14:32   (  -0.02,-127.79) (  -0.78,-131.24)  392.14                80
 06/13/2020   21:58:15   (  -0.01,-127.77) (   0.23,-126.65)  126.76                80
 06/15/2020   10:19:44   (   0.03,-127.75) (   0.95,-131.84)  466.04                80
 06/16/2020   09:58:09   (   0.01,-127.72) (  -0.12,-127.27)   52.20                80