Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 10 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)
 10/21/2020   09:54:28   (  -0.14,-128.32) (  -0.78,-125.36)  337.46                80
 10/22/2020   22:16:06   (   0.13,-128.28) (  -0.40,-130.58)  262.21                80
 10/23/2020   21:54:30   (   0.14,-128.26) (   0.63,-126.00)  257.69                80
 10/25/2020   10:18:39   (  -0.13,-128.25) (   0.51,-131.19)  335.06                80
 10/26/2020   09:57:02   (  -0.14,-128.23) (  -0.52,-126.61)  185.13                80
 10/27/2020   22:21:20   (   0.12,-128.19) (  -0.71,-131.82)  414.15                80
 10/28/2020   21:59:43   (   0.13,-128.17) (   0.32,-127.24)  105.65                80
 10/30/2020   10:23:53   (  -0.11,-128.15) (   0.82,-132.43)  487.79                80
 10/31/2020   10:02:16   (  -0.12,-128.13) (  -0.21,-127.85)   32.15                80
 11/02/2020   22:07:37   (   0.11,-128.06) (   0.02,-128.48)   48.30                80
 11/03/2020   21:46:00   (   0.12,-128.03) (   1.06,-123.90)  470.56                80