Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2023 9 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/19/2023   06:05:24   (  -0.36, 109.51) (  -0.27, 109.85)   38.47                80
 09/20/2023   18:29:55   (   0.34, 107.94) (   1.14, 104.51)  391.81                80
 09/21/2023   18:08:34   (   0.35, 106.91) (  -0.13, 108.99)  237.91                80
 09/23/2023   06:33:14   (  -0.34, 105.26) (  -0.72, 103.61)  188.21                80
 09/24/2023   06:11:53   (  -0.34, 104.21) (   0.55, 108.09)  442.82                80
 09/25/2023   18:33:44   (   0.33, 102.63) (   0.32, 102.76)   13.57                80
 09/27/2023   06:58:25   (  -0.31, 100.99) (  -1.09,  97.36)  412.42                80
 09/28/2023   06:37:03   (  -0.32,  99.93) (   0.12, 101.85)  219.80                80
 09/29/2023   19:01:34   (   0.30,  98.32) (   0.74,  96.52)  206.56                80
 09/30/2023   18:40:13   (   0.32,  97.27) (  -0.54, 100.99)  425.24                80
 10/02/2023   07:04:53   (  -0.30,  95.61) (  -0.28,  95.61)    2.81                80