Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 4 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)
 04/21/2022   10:06:41   (   0.12,-128.32) (  -0.57,-125.24)  350.42                80
 04/22/2022   22:29:10   (  -0.11,-128.31) (  -0.63,-130.67)  267.80                80
 04/23/2022   22:13:25   (  -0.12,-128.30) (   0.33,-126.20)  238.43                80
 04/25/2022   10:33:05   (   0.11,-128.26) (   0.86,-131.59)  379.74                80
 04/26/2022   10:17:21   (   0.12,-128.24) (  -0.15,-127.14)  126.23                80
 04/27/2022   22:37:10   (  -0.11,-128.23) (  -1.09,-132.55)  492.70                80
 04/28/2022   22:21:26   (  -0.12,-128.22) (  -0.07,-128.10)   13.57                80
 05/01/2022   10:22:41   (   0.11,-128.16) (   0.31,-129.02)   98.97                80
 05/02/2022   10:06:57   (   0.11,-128.13) (  -0.70,-124.57)  406.43                80
 05/03/2022   22:26:46   (  -0.10,-128.11) (  -0.52,-129.99)  213.89                80
 05/04/2022   22:11:01   (  -0.11,-128.09) (   0.45,-125.53)  291.51                80