Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2021 11 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)
 11/21/2021   22:23:42   (  -0.05,-128.36) (  -0.51,-130.48)  241.05                80
 11/22/2021   22:08:05   (  -0.06,-128.35) (   0.46,-126.05)  261.48                80
 11/24/2021   10:27:59   (   0.03,-128.32) (   0.74,-131.50)  363.08                80
 11/25/2021   10:12:27   (   0.04,-128.30) (  -0.20,-127.09)  136.97                80
 11/26/2021   22:32:38   (  -0.01,-128.27) (  -0.99,-132.61)  495.38                80
 11/27/2021   22:17:11   (  -0.02,-128.25) (  -0.01,-128.23)    2.77                80
 11/28/2021   21:59:04   (  -0.04,-128.23) (   0.93,-123.84)  499.70                80
 11/30/2021   10:19:15   (   0.01,-128.19) (   0.29,-129.35)  132.90                80
 12/01/2021   10:03:53   (   0.02,-128.16) (  -0.68,-124.99)  361.71                80
 12/02/2021   22:24:20   (   0.00,-128.12) (  -0.53,-130.57)  279.35                80
 12/03/2021   22:09:03   (  -0.01,-128.09) (   0.41,-126.23)  212.84                80