Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 4 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/24/2020   10:04:53   (  -0.16,-128.12) (  -0.09,-128.43)   34.94                80
 04/25/2020   09:43:18   (  -0.18,-128.14) (  -1.14,-123.86)  488.31                80
 04/26/2020   22:07:36   (   0.15,-128.16) (  -0.04,-129.08)  104.74                80
 04/27/2020   21:46:01   (   0.16,-128.17) (   1.02,-124.51)  418.48                80
 04/29/2020   10:10:10   (  -0.13,-128.20) (   0.23,-129.69)  170.21                80
 04/30/2020   09:48:34   (  -0.15,-128.21) (  -0.83,-125.12)  352.26                80
 05/01/2020   22:12:53   (   0.12,-128.21) (  -0.35,-130.34)  242.47                80
 05/02/2020   21:51:17   (   0.13,-128.22) (   0.70,-125.77)  280.12                80
 05/04/2020   10:15:28   (  -0.10,-128.25) (   0.48,-130.96)  308.76                80
 05/05/2020   09:53:51   (  -0.12,-128.25) (  -0.52,-126.38)  213.22                80