Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 10 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/20/2020   10:13:25   (  -0.13,-128.34) (   0.22,-129.95)  183.00                80
 10/21/2020   09:51:48   (  -0.14,-128.32) (  -0.81,-125.36)  337.45                80
 10/22/2020   22:16:07   (   0.13,-128.28) (  -0.37,-130.59)  262.10                80
 10/23/2020   21:54:30   (   0.14,-128.26) (   0.66,-126.01)  257.86                80
 10/25/2020   10:18:38   (  -0.13,-128.25) (   0.54,-131.18)  334.88                80
 10/26/2020   09:57:02   (  -0.14,-128.23) (  -0.49,-126.60)  185.33                80
 10/27/2020   22:21:20   (   0.12,-128.20) (  -0.69,-131.83)  413.82                80
 10/28/2020   21:59:44   (   0.13,-128.18) (   0.34,-127.25)  106.00                80
 10/30/2020   10:23:52   (  -0.11,-128.15) (   0.86,-132.42)  487.42                80
 10/31/2020   10:04:18   (  -0.12,-128.13) (  -0.17,-127.84)   32.48                42
 11/02/2020   22:07:37   (   0.11,-128.06) (   0.03,-128.49)   47.79                80