Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2023 4 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/14/2023   22:26:23   (  -0.16,-133.39) (  -0.37,-134.30)  103.69                80
 04/15/2023   22:04:59   (  -0.17,-133.88) (   0.76,-129.79)  466.32                80
 04/17/2023   10:29:29   (   0.16,-134.67) (   0.24,-135.10)   49.49                80
 04/19/2023   22:32:43   (  -0.15,-135.87) (  -0.16,-135.93)    6.48                80
 04/22/2023   10:33:07   (   0.15,-137.13) (   0.06,-136.72)   46.48                80
 04/23/2023   22:57:46   (  -0.13,-137.84) (  -1.05,-142.07)  481.51                80
 04/24/2023   22:36:21   (  -0.14,-138.32) (   0.04,-137.56)   87.52                80
 04/26/2023   11:00:49   (   0.13,-139.09) (   1.00,-142.85)  429.81                80
 04/27/2023   10:39:26   (   0.14,-139.56) (  -0.15,-138.35)  138.88                80