Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 12 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/26/2019   22:15:00   (  -0.02,-137.19) (   0.89,-133.01)  475.98                80
 12/28/2019   10:39:27   (   0.03,-137.20) (   0.24,-138.29)  123.01                80
 12/29/2019   10:18:02   (   0.02,-137.21) (  -0.76,-133.75)  393.93                80
 12/30/2019   22:42:37   (  -0.03,-137.21) (  -0.43,-139.05)  209.96                80
 12/31/2019   22:21:12   (  -0.02,-137.21) (   0.58,-134.52)  306.78                80
 01/02/2020   10:45:38   (   0.03,-137.22) (   0.62,-139.78)  292.73                80
 01/03/2020   10:24:12   (   0.02,-137.22) (  -0.39,-135.25)  223.75                80
 01/04/2020   22:48:48   (  -0.03,-137.21) (  -0.79,-140.55)  380.92                80
 01/05/2020   22:27:22   (  -0.03,-137.20) (   0.22,-136.01)  135.17                80
 01/07/2020   10:51:49   (   0.04,-137.20) (   0.98,-141.28)  465.61                80
 01/08/2020   10:30:24   (   0.04,-137.19) (  -0.09,-136.75)   49.96                80