Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 1 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/31/2022   22:18:45   (   0.02,-128.30) (  -0.07,-128.80)   57.33                80
 02/01/2022   22:03:01   (   0.02,-128.29) (   0.89,-124.35)  448.42                80
 02/03/2022   10:25:24   (  -0.02,-128.25) (   0.29,-129.75)  169.92                80
 02/04/2022   10:04:20   (  -0.02,-128.24) (  -0.67,-125.29)  335.83                80
 02/05/2022   22:26:49   (   0.02,-128.24) (  -0.52,-130.72)  282.57                80
 02/06/2022   22:11:06   (   0.02,-128.22) (   0.44,-126.26)  223.18                80
 02/08/2022   10:33:27   (  -0.01,-128.19) (   0.80,-131.65)  395.40                80
 02/09/2022   10:12:25   (  -0.00,-128.17) (  -0.23,-127.21)  110.10                80
 02/11/2022   22:16:31   (  -0.01,-128.14) (   0.01,-128.18)    5.04                80