Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 10 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/17/2020   22:10:52   (   0.13,-128.36) (  -0.08,-129.34)  111.80                80
 10/18/2020   21:49:16   (   0.14,-128.35) (   0.95,-124.76)  408.90                80
 10/20/2020   10:13:24   (  -0.13,-128.34) (   0.24,-129.94)  182.99                80
 10/21/2020   09:51:48   (  -0.14,-128.32) (  -0.79,-125.36)  337.54                80
 10/22/2020   22:16:06   (   0.13,-128.29) (  -0.39,-130.58)  261.60                80
 10/23/2020   21:54:30   (   0.14,-128.27) (   0.64,-126.00)  258.43                80
 10/25/2020   10:18:38   (  -0.13,-128.25) (   0.55,-131.18)  334.43                80
 10/26/2020   09:57:02   (  -0.14,-128.24) (  -0.48,-126.60)  185.87                80
 10/27/2020   22:21:20   (   0.12,-128.20) (  -0.69,-131.83)  412.89                80
 10/28/2020   21:59:43   (   0.13,-128.18) (   0.35,-127.25)  107.04                80
 10/30/2020   10:23:52   (  -0.11,-128.16) (   0.85,-132.42)  486.49                80