Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 12 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/11/2022   22:42:17   (   0.00,-127.55) (  -0.90,-131.57)  458.45                80
 12/12/2022   22:26:37   (  -0.00,-127.51) (   0.07,-127.13)   43.15                80
 12/15/2022   10:28:04   (  -0.01,-127.48) (   0.16,-128.10)   71.17                80
 12/16/2022   10:12:25   (   0.00,-127.43) (  -0.82,-123.66)  430.20                80
 12/17/2022   22:32:20   (   0.01,-127.30) (  -0.42,-129.09)  205.29                80
 12/18/2022   22:16:40   (   0.01,-127.25) (   0.57,-124.65)  295.84                80
 12/20/2022   10:36:27   (  -0.02,-127.25) (   0.63,-130.06)  320.77                80
 12/21/2022   10:20:47   (  -0.01,-127.20) (  -0.35,-125.62)  179.77                80
 12/22/2022   22:40:43   (   0.02,-127.05) (  -0.88,-131.06)  457.25                80
 12/23/2022   22:25:03   (   0.01,-126.99) (   0.11,-126.62)   42.80                80