Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 10 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)
 10/28/2020   21:59:43   (   0.13,-128.16) (   0.34,-127.24)  104.57                80
 10/30/2020   10:23:52   (  -0.11,-128.12) (   0.85,-132.42)  489.77                80
 10/31/2020   10:02:15   (  -0.12,-128.10) (  -0.18,-127.84)   29.64                80
 11/02/2020   22:07:36   (   0.11,-128.02) (  -0.00,-128.47)   51.21                80
 11/03/2020   21:45:59   (   0.12,-127.99) (   1.03,-123.89)  467.36                80
 11/05/2020   10:10:08   (  -0.10,-127.94) (   0.17,-129.07)  128.68                80
 11/06/2020   09:48:31   (  -0.12,-127.91) (  -0.87,-124.49)  389.61                80
 11/07/2020   22:12:49   (   0.10,-127.85) (  -0.34,-129.70)  211.39                80
 11/08/2020   21:51:12   (   0.11,-127.81) (   0.70,-125.12)  306.35                80
 11/10/2020   10:15:20   (  -0.09,-127.75) (   0.50,-130.30)  291.03                80