Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 10 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)
 10/27/2021   22:35:17   (  -0.02,-137.22) (  -0.14,-137.74)   59.67                80
 10/28/2021   22:19:13   (  -0.02,-137.22) (   0.85,-133.21)  455.98                80
 10/30/2021   10:38:24   (   0.02,-137.21) (   0.32,-138.49)  145.98                80
 10/31/2021   10:22:21   (   0.02,-137.21) (  -0.74,-133.97)  369.36                80
 11/01/2021   22:41:38   (  -0.01,-137.20) (  -0.51,-139.27)  237.11                80
 11/02/2021   22:25:36   (  -0.01,-137.19) (   0.55,-134.75)  278.01                80
 11/04/2021   10:44:45   (   0.01,-137.17) (   0.67,-140.02)  324.84                80
 11/05/2021   10:28:43   (   0.01,-137.16) (  -0.39,-135.50)  189.67                80
 11/06/2021   22:48:00   (  -0.01,-137.13) (  -0.85,-140.80)  418.53                80
 11/07/2021   22:31:57   (  -0.01,-137.11) (   0.15,-136.27)   95.40                80