Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 4 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/30/2020   09:48:35   (  -0.15,-128.22) (  -0.84,-125.12)  353.62                80
 05/01/2020   22:12:53   (   0.12,-128.23) (  -0.35,-130.34)  240.88                80
 05/02/2020   21:51:17   (   0.13,-128.24) (   0.70,-125.77)  281.98                80
 05/04/2020   10:15:28   (  -0.10,-128.27) (   0.48,-130.96)  306.28                80
 05/05/2020   09:53:51   (  -0.12,-128.27) (  -0.52,-126.38)  215.96                80
 05/06/2020   22:18:10   (   0.09,-128.27) (  -0.67,-131.60)  379.93                80
 05/07/2020   21:56:34   (   0.11,-128.28) (   0.39,-127.03)  142.30                80
 05/09/2020   10:20:44   (  -0.08,-128.30) (   0.79,-132.22)  446.40                80
 05/10/2020   09:59:09   (  -0.10,-128.30) (  -0.27,-127.65)   75.18                80
 05/12/2020   22:04:31   (   0.08,-128.28) (   0.08,-128.29)    0.76                80