Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2021 10 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/29/2021   10:16:42   (   0.17,-128.39) (   0.30,-128.96)   65.02                80
 10/30/2021   10:00:23   (   0.18,-128.40) (  -0.72,-124.37)  459.73                80
 10/31/2021   22:19:20   (  -0.15,-128.41) (  -0.41,-129.58)  133.45                80
 11/01/2021   22:03:01   (  -0.16,-128.42) (   0.62,-124.99)  391.25                80
 11/03/2021   10:21:48   (   0.13,-128.43) (   0.52,-130.16)  197.14                80
 11/04/2021   10:05:29   (   0.15,-128.44) (  -0.50,-125.57)  327.11                80
 11/05/2021   22:24:25   (  -0.12,-128.43) (  -0.62,-130.78)  267.36                80
 11/06/2021   22:08:06   (  -0.14,-128.43) (   0.34,-126.18)  256.46                80
 11/08/2021   10:26:53   (   0.10,-128.43) (   0.74,-131.36)  333.42                80
 11/09/2021   10:10:35   (   0.12,-128.42) (  -0.28,-126.77)  189.83                80
 11/10/2021   22:29:30   (  -0.09,-128.41) (  -0.89,-131.97)  406.01                80
 11/11/2021   22:13:12   (  -0.10,-128.40) (   0.14,-127.38)  117.24                80