Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 10 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/22/2020   22:16:06   (   0.13,-128.28) (  -0.41,-130.58)  262.32                80
 10/23/2020   21:54:29   (   0.14,-128.26) (   0.62,-126.00)  257.52                80
 10/25/2020   10:18:39   (  -0.13,-128.24) (   0.51,-131.19)  335.31                80
 10/26/2020   09:57:02   (  -0.14,-128.22) (  -0.52,-126.61)  184.79                80
 10/27/2020   22:21:19   (   0.12,-128.19) (  -0.72,-131.82)  414.66                80
 10/28/2020   21:59:43   (   0.13,-128.16) (   0.32,-127.24)  105.08                80
 10/30/2020   10:23:52   (  -0.11,-128.14) (   0.82,-132.43)  488.43                80
 10/31/2020   10:02:16   (  -0.12,-128.12) (  -0.21,-127.85)   31.43                80
 11/02/2020   22:07:37   (   0.11,-128.05) (   0.02,-128.48)   49.28                80
 11/03/2020   21:46:00   (   0.12,-128.02) (   1.06,-123.90)  469.52                80