Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 11 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/21/2020   10:06:50   (  -0.05,-127.62) (   0.08,-128.18)   63.89                80
 11/22/2020   09:45:14   (  -0.07,-127.66) (  -0.96,-123.60)  462.14                80
 11/23/2020   22:09:31   (   0.04,-127.70) (  -0.22,-128.82)  127.62                80
 11/24/2020   21:47:55   (   0.06,-127.74) (   0.82,-124.24)  398.04                80
 11/26/2020   10:12:04   (  -0.03,-127.80) (   0.34,-129.43)  185.39                80
 11/27/2020   09:50:28   (  -0.05,-127.84) (  -0.70,-124.85)  340.39                80
 11/28/2020   22:14:45   (   0.01,-127.88) (  -0.48,-130.07)  249.40                80
 11/29/2020   21:53:08   (   0.03,-127.91) (   0.57,-125.49)  275.62                80
 12/01/2020   10:17:18   (   0.01,-127.96) (   0.60,-130.67)  309.49                80
 12/02/2020   09:55:41   (  -0.01,-127.98) (  -0.44,-126.09)  215.39                80
 12/03/2020   22:19:57   (  -0.02,-128.01) (  -0.78,-131.30)  375.18                80
 12/04/2020   21:58:21   (  -0.00,-128.03) (   0.26,-126.72)  148.93                80