Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2021 10 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/26/2021   22:16:54   (  -0.18,-128.36) (  -0.17,-128.39)    3.42                80
 10/29/2021   10:16:42   (   0.17,-128.39) (   0.29,-128.97)   65.44                80
 10/30/2021   10:00:24   (   0.18,-128.40) (  -0.74,-124.37)  459.19                80
 10/31/2021   22:19:20   (  -0.15,-128.40) (  -0.39,-129.59)  134.57                80
 11/01/2021   22:03:01   (  -0.16,-128.41) (   0.63,-124.99)  390.03                80
 11/03/2021   10:21:48   (   0.13,-128.42) (   0.51,-130.17)  198.22                80
 11/04/2021   10:05:29   (   0.15,-128.43) (  -0.52,-125.57)  325.93                80
 11/05/2021   22:24:25   (  -0.12,-128.42) (  -0.66,-130.78)  269.07                80
 11/06/2021   22:08:06   (  -0.13,-128.42) (   0.37,-126.18)  254.60                80
 11/08/2021   10:26:52   (   0.10,-128.42) (   0.78,-131.35)  335.10                80