Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 3 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)
 03/30/2020   22:19:01   (   0.26,-127.92) (  -0.61,-131.91)  453.70                80
 03/31/2020   22:00:05   (   0.27,-127.89) (   0.37,-127.32)   64.25                80
 04/03/2020   10:02:40   (  -0.25,-127.77) (  -0.21,-127.94)   18.84                80
 04/04/2020   09:41:04   (  -0.26,-127.73) (  -1.26,-123.37)  498.12                80
 04/05/2020   22:05:21   (   0.24,-127.69) (   0.01,-128.58)  101.95                80
 04/06/2020   21:43:46   (   0.25,-127.65) (   1.05,-124.00)  415.27                80
 04/08/2020   10:07:56   (  -0.23,-127.57) (   0.16,-129.19)  185.58                80
 04/09/2020   09:46:21   (  -0.24,-127.52) (  -0.89,-124.62)  330.86                80
 04/10/2020   22:10:39   (   0.22,-127.47) (  -0.30,-129.84)  270.55                80
 04/11/2020   21:49:03   (   0.23,-127.42) (   0.69,-125.26)  246.02                80
 04/13/2020   10:13:14   (  -0.20,-127.34) (   0.47,-130.46)  355.17                80