Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 4 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/18/2020   10:18:32   (  -0.17,-127.98) (   0.65,-131.74)  428.34                80
 04/19/2020   09:56:56   (  -0.18,-128.00) (  -0.35,-127.16)   95.82                80
 04/20/2020   22:21:14   (   0.16,-128.04) (  -0.83,-132.38)  495.44                80
 04/21/2020   21:59:38   (   0.17,-128.06) (   0.22,-127.81)   28.87                80
 04/24/2020   10:04:53   (  -0.16,-128.12) (  -0.08,-128.43)   34.87                80
 04/25/2020   09:43:18   (  -0.18,-128.14) (  -1.13,-123.85)  488.47                80
 04/26/2020   22:07:36   (   0.15,-128.16) (  -0.05,-129.08)  104.37                80
 04/27/2020   21:46:01   (   0.16,-128.18) (   1.00,-124.51)  418.89                80
 04/29/2020   10:10:11   (  -0.13,-128.21) (   0.19,-129.70)  169.77                80
 04/30/2020   09:48:35   (  -0.15,-128.22) (  -0.87,-125.13)  352.72                80
 05/01/2020   22:12:53   (   0.12,-128.22) (  -0.37,-130.34)  241.87                80