Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 4 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/29/2020   10:10:11   (  -0.13,-128.21) (   0.17,-129.70)  169.23                80
 04/30/2020   09:48:35   (  -0.15,-128.22) (  -0.82,-125.11)  353.39                80
 05/01/2020   22:12:53   (   0.12,-128.22) (  -0.37,-130.34)  241.32                80
 05/02/2020   21:51:17   (   0.13,-128.23) (   0.69,-125.77)  281.41                80
 05/04/2020   10:15:28   (  -0.10,-128.26) (   0.49,-130.96)  306.98                80
 05/05/2020   09:53:52   (  -0.12,-128.27) (  -0.56,-126.39)  215.13                80
 05/06/2020   22:18:10   (   0.09,-128.26) (  -0.63,-131.61)  380.95                80
 05/07/2020   21:56:34   (   0.11,-128.27) (   0.37,-127.02)  141.19                80
 05/09/2020   10:20:44   (  -0.08,-128.29) (   0.81,-132.22)  447.72                80
 05/10/2020   09:59:09   (  -0.10,-128.29) (  -0.25,-127.64)   73.71                80