Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2023 4 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/19/2023   22:30:02   (  -0.15,-135.87) (  -0.19,-135.92)    6.80                80
 04/22/2023   10:33:07   (   0.15,-137.13) (   0.08,-136.72)   46.82                80
 04/23/2023   22:57:45   (  -0.13,-137.84) (  -1.06,-142.07)  481.21                80
 04/24/2023   22:36:20   (  -0.15,-138.32) (   0.03,-137.55)   87.81                80
 04/26/2023   11:00:50   (   0.13,-139.09) (   0.94,-142.86)  429.49                80
 04/27/2023   10:39:25   (   0.15,-139.56) (  -0.15,-138.35)  139.25                80
 04/28/2023   23:04:03   (  -0.13,-140.26) (  -0.87,-143.69)  389.62                80
 04/29/2023   22:42:38   (  -0.14,-140.74) (   0.23,-139.17)  179.06                80
 05/01/2023   11:07:06   (   0.12,-141.50) (   0.78,-144.47)  338.92                80
 05/02/2023   10:45:42   (   0.14,-141.97) (  -0.32,-139.96)  229.35                80