Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 10 19.  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   10:13:24   (  -0.13,-128.34) (   0.24,-129.94)  183.00                80
 10/21/2020   09:54:28   (  -0.14,-128.32) (  -0.79,-125.36)  337.50                80
 10/22/2020   22:16:06   (   0.13,-128.29) (  -0.40,-130.58)  261.89                80
 10/23/2020   21:54:30   (   0.14,-128.27) (   0.63,-126.00)  258.10                80
 10/25/2020   10:18:39   (  -0.13,-128.25) (   0.50,-131.19)  334.66                80
 10/26/2020   09:57:02   (  -0.14,-128.23) (  -0.53,-126.61)  185.62                80
 10/27/2020   22:21:20   (   0.12,-128.20) (  -0.71,-131.82)  413.40                80
 10/28/2020   21:59:43   (   0.13,-128.18) (   0.32,-127.24)  106.50                80
 10/30/2020   10:23:53   (  -0.11,-128.16) (   0.82,-132.43)  486.96                80
 10/31/2020   10:02:16   (  -0.12,-128.14) (  -0.21,-127.85)   33.05                80