Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2023 5 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/18/2023   23:29:17   (  -0.07,-149.57) (  -0.21,-150.16)   66.55                80
 05/19/2023   23:07:54   (  -0.09,-150.02) (   0.91,-145.65)  498.42                80
 05/21/2023   11:32:23   (   0.06,-150.71) (   0.11,-150.95)   27.74                80
 05/23/2023   23:32:57   (  -0.05,-151.80) (  -0.06,-151.77)    3.17                80
 05/26/2023   11:36:03   (   0.04,-152.92) (  -0.04,-152.57)   39.82                80
 05/28/2023   00:00:41   (  -0.01,-153.57) (  -0.96,-157.92)  495.13                80
 05/28/2023   23:41:57   (  -0.03,-154.00) (   0.11,-153.40)   68.76                80
 05/30/2023   12:03:46   (  -0.00,-154.68) (   0.91,-158.70)  459.09                80
 05/31/2023   11:42:22   (   0.02,-155.10) (  -0.16,-154.18)  104.27                80