Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 1 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/25/2022   22:29:02   (   0.05,-128.36) (  -0.63,-131.34)  340.03                80
 01/26/2022   22:13:20   (   0.04,-128.35) (   0.38,-126.89)  166.56                80
 01/28/2022   10:35:41   (  -0.04,-128.33) (   0.86,-132.28)  450.73                80
 01/29/2022   10:14:39   (  -0.03,-128.31) (  -0.16,-127.84)   55.28                80
 01/31/2022   22:18:45   (   0.02,-128.29) (  -0.09,-128.80)   57.92                80
 02/01/2022   22:03:02   (   0.02,-128.28) (   0.93,-124.36)  447.82                80
 02/03/2022   10:25:23   (  -0.02,-128.25) (   0.31,-129.75)  170.06                80
 02/04/2022   10:04:21   (  -0.02,-128.24) (  -0.71,-125.30)  335.65                80
 02/05/2022   22:26:49   (   0.02,-128.23) (  -0.54,-130.72)  283.56                80
 02/06/2022   22:11:07   (   0.02,-128.22) (   0.48,-126.27)  222.15                80