Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 4 24.  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) (  -0.06,-128.42)   34.98                80
 04/25/2020   09:43:17   (  -0.18,-128.14) (  -1.12,-123.85)  488.43                80
 04/26/2020   22:07:36   (   0.15,-128.16) (  -0.07,-129.07)  104.70                80
 04/27/2020   21:46:00   (   0.16,-128.17) (   0.98,-124.50)  418.50                80
 04/29/2020   10:10:11   (  -0.13,-128.20) (   0.21,-129.69)  170.05                80
 04/30/2020   09:48:35   (  -0.15,-128.21) (  -0.85,-125.12)  352.38                80
 05/01/2020   22:12:53   (   0.12,-128.21) (  -0.34,-130.35)  242.44                80
 05/02/2020   21:51:18   (   0.13,-128.22) (   0.71,-125.77)  280.16                80
 05/04/2020   10:15:27   (  -0.10,-128.25) (   0.53,-130.95)  308.66                80
 05/05/2020   09:53:52   (  -0.12,-128.25) (  -0.52,-126.38)  213.31                80
 05/06/2020   22:18:10   (   0.09,-128.25) (  -0.67,-131.60)  382.85                80
 05/07/2020   21:56:35   (   0.11,-128.25) (   0.38,-127.03)  139.10                80