Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 1 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)
 01/17/2023   10:25:59   (   0.01,-128.15) (  -0.35,-126.59)  177.64                80
 01/18/2023   22:48:34   (  -0.01,-128.13) (  -0.87,-132.03)  444.20                80
 01/19/2023   22:27:33   (  -0.01,-128.14) (   0.10,-127.58)   63.12                80
 01/22/2023   10:31:39   (   0.01,-128.20) (   0.09,-128.55)   39.42                80
 01/23/2023   10:16:00   (   0.01,-128.21) (  -0.94,-124.11)  467.81                80
 01/24/2023   22:38:33   (  -0.00,-128.19) (  -0.32,-129.54)  154.39                80
 01/25/2023   22:17:33   (  -0.00,-128.20) (   0.72,-125.11)  352.63                80
 01/27/2023   10:39:59   (  -0.00,-128.24) (   0.49,-130.51)  257.66                80
 01/28/2023   10:24:18   (  -0.00,-128.25) (  -0.48,-126.06)  249.55                80
 01/29/2023   22:46:52   (   0.00,-128.23) (  -0.75,-131.49)  372.32                80
 01/30/2023   22:25:52   (   0.01,-128.23) (   0.30,-127.06)  134.21                80