Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2023 9 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/15/2023   08:12:31   (   0.01,-104.71) (  -0.61,-102.06)  302.40                80
 09/16/2023   20:34:25   (  -0.01,-104.68) (  -0.61,-107.35)  304.15                80
 09/17/2023   20:18:20   (  -0.01,-104.69) (   0.41,-102.82)  212.61                80
 09/19/2023   08:40:06   (   0.01,-104.71) (   0.75,-108.09)  385.11                80
 09/20/2023   08:18:41   (   0.01,-104.70) (  -0.27,-103.56)  131.16                80
 09/21/2023   20:40:35   (  -0.01,-104.67) (  -0.93,-108.85)  476.44                80
 09/22/2023   20:24:29   (  -0.01,-104.67) (   0.10,-104.32)   39.95                80
 09/25/2023   08:27:29   (   0.01,-104.68) (   0.09,-105.05)   42.11                80
 09/26/2023   08:06:04   (   0.01,-104.67) (  -0.95,-100.52)  473.98                80
 09/27/2023   20:27:57   (  -0.02,-104.64) (  -0.30,-105.81)  133.57                80
 09/28/2023   20:11:52   (  -0.02,-104.64) (   0.74,-101.28)  383.02                80