Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 4 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/14/2020   09:51:38   (  -0.21,-127.86) (  -0.65,-125.89)  224.18                80
 04/15/2020   22:15:57   (   0.19,-127.90) (  -0.53,-131.12)  366.12                80
 04/16/2020   21:54:21   (   0.20,-127.94) (   0.52,-126.55)  158.71                80
 04/18/2020   10:18:32   (  -0.17,-127.98) (   0.68,-131.73)  427.97                80
 04/19/2020   09:56:56   (  -0.18,-128.01) (  -0.37,-127.16)   96.29                80
 04/20/2020   22:21:14   (   0.16,-128.04) (  -0.81,-132.39)  494.94                80
 04/21/2020   21:59:39   (   0.17,-128.07) (   0.24,-127.82)   29.51                80
 04/24/2020   10:04:54   (  -0.16,-128.14) (  -0.09,-128.43)   33.54                80
 04/25/2020   09:43:18   (  -0.18,-128.16) (  -1.14,-123.86)  489.91                80
 04/26/2020   22:07:37   (   0.15,-128.18) (  -0.04,-129.09)  102.95                80
 04/27/2020   21:46:01   (   0.16,-128.20) (   1.01,-124.51)  420.49                80