Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 2 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/13/2023   10:30:48   (   0.07,-128.25) (  -0.14,-127.43)   93.91                80
 02/15/2023   22:34:59   (  -0.08,-128.22) (  -0.14,-128.40)   21.44                80
 02/16/2023   22:13:58   (  -0.08,-128.20) (   0.88,-123.96)  483.64                80
 02/18/2023   10:36:23   (   0.09,-128.18) (   0.36,-129.35)  133.81                80
 02/19/2023   10:20:42   (   0.09,-128.17) (  -0.66,-124.91)  371.27                80
 02/20/2023   22:43:14   (  -0.09,-128.14) (  -0.61,-130.33)  249.65                80
 02/21/2023   22:22:13   (  -0.09,-128.13) (   0.42,-125.89)  255.18                80
 02/23/2023   10:44:37   (   0.09,-128.10) (   0.81,-131.28)  362.94                80
 02/24/2023   10:28:57   (   0.09,-128.08) (  -0.22,-126.84)  142.08                80
 02/25/2023   22:51:28   (  -0.09,-128.06) (  -1.03,-132.26)  478.64                80