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

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/17/2023   17:43:23   (   0.37, 111.16) (  -0.57, 115.23)  464.25                80
 09/19/2023   06:05:24   (  -0.36, 109.51) (  -0.29, 109.85)   39.13                80
 09/20/2023   18:29:56   (   0.34, 107.93) (   1.11, 104.50)  390.84                80
 09/21/2023   18:08:33   (   0.35, 106.89) (  -0.10, 108.99)  239.07                80
 09/23/2023   06:33:15   (  -0.33, 105.25) (  -0.69, 103.61)  186.65                80
 09/24/2023   06:11:52   (  -0.34, 104.19) (   0.52, 108.10)  444.55                80
 09/25/2023   18:33:45   (   0.33, 102.61) (   0.29, 102.75)   15.42                80
 09/27/2023   06:58:25   (  -0.30, 100.96) (  -1.13,  97.37)  410.07                80
 09/28/2023   06:37:03   (  -0.32,  99.90) (   0.14, 101.85)  222.35                80
 09/29/2023   19:01:35   (   0.30,  98.30) (   0.72,  96.51)  203.80                80
 09/30/2023   18:40:12   (   0.32,  97.24) (  -0.49, 101.00)  428.18                80