Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2023 7 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/11/2023   01:14:16   (   0.25,-178.58) (   0.54,-177.32)  143.52                80
 07/12/2023   13:38:51   (  -0.29, 179.87) (   0.28, 177.32)  290.68                80
 07/13/2023   13:17:29   (  -0.26, 178.86) (  -0.90,-178.19)  335.74                80
 07/15/2023   01:42:12   (   0.30, 177.29) (   0.10, 176.42)  100.07                80
 07/17/2023   13:42:45   (  -0.30, 174.75) (  -0.48, 175.55)   91.34                80
 07/19/2023   02:07:28   (   0.34, 173.18) (  -0.31, 170.15)  344.97                80
 07/20/2023   01:46:07   (   0.31, 172.17) (   0.88, 174.64)  281.45                80
 07/21/2023   14:10:41   (  -0.35, 170.63) (  -0.07, 169.28)  153.06                80
 07/22/2023   13:49:20   (  -0.32, 169.62) (  -1.27, 173.77)  473.11                80
 07/24/2023   02:11:22   (   0.35, 168.06) (   0.42, 168.38)   36.70                80