Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 9 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/13/2021   08:39:43   (   0.38,-104.20) (   1.23,-108.10)  444.10                80
 09/14/2021   08:18:19   (   0.38,-104.18) (   0.23,-103.57)   70.65                80
 09/16/2021   20:21:32   (  -0.37,-104.26) (  -0.40,-104.34)    9.39                80
 09/19/2021   08:27:15   (   0.36,-104.20) (   0.57,-105.08)  100.42                80
 09/20/2021   08:05:51   (   0.36,-104.19) (  -0.43,-100.54)  414.97                80
 09/21/2021   20:27:48   (  -0.35,-104.25) (  -0.73,-105.85)  183.00                80
 09/22/2021   20:11:45   (  -0.36,-104.27) (   0.33,-101.33)  335.00                80
 09/24/2021   08:33:33   (   0.34,-104.24) (   0.85,-106.60)  268.99                80
 09/25/2021   08:12:09   (   0.35,-104.23) (  -0.16,-102.07)  246.59                80
 09/26/2021   20:34:05   (  -0.33,-104.25) (  -1.06,-107.37)  355.61                80