Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2021 10 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/31/2021   22:19:20   (  -0.15,-128.42) (  -0.40,-129.58)  132.93                80
 11/01/2021   22:03:01   (  -0.16,-128.42) (   0.63,-124.99)  391.90                80
 11/03/2021   10:21:48   (   0.13,-128.44) (   0.51,-130.16)  196.39                80
 11/04/2021   10:05:29   (   0.15,-128.44) (  -0.52,-125.57)  328.00                80
 11/05/2021   22:24:24   (  -0.12,-128.44) (  -0.66,-130.77)  266.16                80
 11/06/2021   22:08:06   (  -0.14,-128.44) (   0.37,-126.18)  257.77                80
 11/08/2021   10:26:52   (   0.11,-128.44) (   0.77,-131.35)  331.98                80
 11/09/2021   10:10:34   (   0.12,-128.43) (  -0.26,-126.76)  191.38                80
 11/10/2021   22:29:29   (  -0.09,-128.42) (  -0.91,-131.96)  404.11                80
 11/11/2021   22:13:11   (  -0.10,-128.42) (   0.13,-127.37)  119.29                80
 11/13/2021   10:31:57   (   0.07,-128.41) (   1.01,-132.54)  470.64                80