Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2022 9 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/14/2022   21:56:53   (  -0.35,-127.58) (  -0.47,-128.10)   59.32                80
 09/15/2022   21:40:49   (  -0.35,-127.56) (   0.54,-123.57)  454.18                80
 09/17/2022   10:02:37   (   0.34,-127.55) (   0.64,-128.84)  147.41                80
 09/18/2022   09:41:13   (   0.34,-127.52) (  -0.37,-124.31)  365.05                80
 09/19/2022   22:03:10   (  -0.33,-127.42) (  -0.79,-129.62)  250.60                80
 09/20/2022   21:47:06   (  -0.33,-127.38) (   0.21,-125.09)  262.33                80
 09/22/2022   10:08:54   (   0.31,-127.38) (   0.96,-130.36)  338.89                80
 09/23/2022   09:47:29   (   0.32,-127.34) (  -0.05,-125.83)  173.32                80
 09/24/2022   22:09:26   (  -0.30,-127.23) (  -1.15,-131.13)  444.04                80
 09/25/2022   21:53:21   (  -0.30,-127.19) (  -0.14,-126.60)   68.70                80