Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 3 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/21/2022   22:20:27   (  -0.09,-128.18) (  -0.09,-128.18)    0.90                80
 03/24/2022   10:24:24   (   0.09,-128.24) (   0.29,-129.11)   99.49                80
 03/25/2022   10:03:20   (   0.09,-128.26) (  -0.71,-124.66)  410.16                80
 03/26/2022   22:25:49   (  -0.10,-128.29) (  -0.52,-130.08)  203.96                80
 03/27/2022   22:10:06   (  -0.10,-128.31) (   0.48,-125.63)  305.72                80
 03/29/2022   10:32:26   (   0.11,-128.34) (   0.70,-131.02)  304.94                80
 03/30/2022   10:11:23   (   0.11,-128.36) (  -0.30,-126.57)  204.59                80
 03/31/2022   22:33:52   (  -0.11,-128.39) (  -0.92,-131.99)  409.91                80
 04/01/2022   22:18:09   (  -0.11,-128.41) (   0.07,-127.54)   99.68                80