Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 6 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/15/2020   10:19:45   (   0.03,-127.72) (   0.93,-131.84)  469.75                80
 06/16/2020   09:58:08   (   0.02,-127.68) (  -0.08,-127.26)   47.90                80
 06/18/2020   22:00:51   (  -0.02,-127.56) (  -0.07,-127.91)   38.77                80
 06/19/2020   21:44:35   (  -0.01,-127.52) (   0.93,-123.32)  478.83                80
 06/21/2020   10:06:04   (   0.02,-127.48) (   0.24,-128.51)  117.28                80
 06/22/2020   09:44:28   (   0.01,-127.43) (  -0.77,-123.93)  399.33                80
 06/23/2020   22:06:06   (  -0.02,-127.34) (  -0.44,-129.15)  206.89                80
 06/24/2020   21:49:50   (  -0.01,-127.29) (   0.62,-124.58)  309.97                80
 06/26/2020   10:11:19   (   0.03,-127.25) (   0.61,-129.75)  286.46                80
 06/27/2020   09:49:43   (   0.02,-127.19) (  -0.45,-125.18)  229.79                80