Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 10 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/17/2020   22:10:53   (   0.13,-128.36) (  -0.06,-129.35)  111.89                80
 10/18/2020   21:49:16   (   0.14,-128.35) (   0.97,-124.77)  408.85                80
 10/20/2020   10:13:25   (  -0.13,-128.34) (   0.22,-129.94)  182.97                80
 10/21/2020   09:51:48   (  -0.14,-128.32) (  -0.81,-125.36)  337.55                80
 10/22/2020   22:16:06   (   0.13,-128.29) (  -0.37,-130.59)  261.69                80
 10/23/2020   21:54:30   (   0.14,-128.27) (   0.66,-126.01)  258.34                80
 10/25/2020   10:18:38   (  -0.13,-128.25) (   0.53,-131.19)  334.45                80
 10/26/2020   09:57:02   (  -0.14,-128.24) (  -0.50,-126.61)  185.83                80
 10/27/2020   22:21:20   (   0.12,-128.20) (  -0.67,-131.83)  413.01                80
 10/28/2020   21:59:44   (   0.13,-128.18) (   0.36,-127.25)  106.93                80
 10/30/2020   10:23:52   (  -0.11,-128.16) (   0.84,-132.43)  486.55                80
 10/31/2020   10:02:15   (  -0.12,-128.14) (  -0.19,-127.85)   33.39                80