Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 7 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/11/2021   08:36:36   (  -0.19,-104.09) (   0.70,-108.14)  461.59                80
 07/12/2021   08:20:31   (  -0.18,-104.09) (  -0.27,-103.61)   54.74                80
 07/14/2021   20:21:06   (   0.19,-104.34) (   0.18,-104.40)    7.54                80
 07/17/2021   08:24:11   (  -0.21,-104.09) (   0.00,-105.14)  119.22                80
 07/18/2021   08:08:06   (  -0.19,-104.09) (  -0.98,-100.61)  397.03                80
 07/19/2021   20:27:26   (   0.23,-104.33) (  -0.10,-105.94)  182.86                80
 07/20/2021   20:11:21   (   0.22,-104.33) (   0.88,-101.40)  333.56                80
 07/22/2021   08:30:29   (  -0.26,-104.08) (   0.34,-106.66)  294.56                80
 07/23/2021   08:14:26   (  -0.25,-104.08) (  -0.70,-102.14)  221.35                80