Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 2 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/21/2021   10:45:38   (  -0.05,-137.22) (   0.52,-139.84)  298.93                80
 02/22/2021   10:24:12   (  -0.04,-137.21) (  -0.45,-135.30)  217.39                80
 02/23/2021   22:46:08   (   0.04,-137.20) (  -0.72,-140.61)  388.00                80
 02/24/2021   22:30:03   (   0.03,-137.20) (   0.26,-136.07)  128.03                80
 02/26/2021   10:51:51   (  -0.02,-137.19) (   0.89,-141.34)  472.83                80
 02/27/2021   10:30:26   (  -0.02,-137.18) (  -0.08,-136.80)   42.75                80
 03/01/2021   22:33:37   (   0.02,-137.15) (  -0.11,-137.57)   48.79                80
 03/02/2021   22:17:32   (   0.02,-137.14) (   0.93,-133.04)  466.34                80
 03/04/2021   10:39:20   (  -0.02,-137.12) (   0.28,-138.31)  136.08                80
 03/05/2021   10:17:55   (  -0.02,-137.10) (  -0.76,-133.78)  378.42                80
 03/06/2021   22:39:50   (   0.01,-137.06) (  -0.46,-139.08)  229.82                80