Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2023 9 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/20/2023   18:29:56   (   0.34, 107.94) (   1.09, 104.50)  391.79                80
 09/21/2023   18:08:34   (   0.35, 106.91) (  -0.11, 108.99)  237.93                80
 09/23/2023   06:33:15   (  -0.34, 105.26) (  -0.68, 103.60)  188.15                80
 09/24/2023   06:11:52   (  -0.34, 104.21) (   0.53, 108.09)  442.90                80
 09/25/2023   18:33:45   (   0.33, 102.63) (   0.27, 102.75)   13.95                80
 09/27/2023   06:58:25   (  -0.31, 100.99) (  -1.11,  97.37)  412.26                80
 09/28/2023   06:37:03   (  -0.32,  99.93) (   0.11, 101.86)  219.98                80
 09/29/2023   19:01:35   (   0.30,  98.32) (   0.69,  96.51)  206.31                80
 09/30/2023   18:40:12   (   0.32,  97.27) (  -0.53, 101.00)  425.48                80
 10/02/2023   07:04:53   (  -0.30,  95.61) (  -0.29,  95.62)    1.64                80
 10/03/2023   19:26:45   (   0.28,  93.99) (   1.08,  90.27)  423.32                80