Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2023 1 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)
 01/20/2023   21:57:32   (  -0.02,-128.15) (  -0.01,-128.08)    7.98                80
 01/23/2023   10:00:37   (   0.01,-128.22) (   0.15,-128.82)   68.71                80
 01/24/2023   09:44:33   (   0.01,-128.23) (  -0.85,-124.29)  448.89                80
 01/25/2023   22:06:30   (  -0.01,-128.20) (  -0.33,-129.59)  158.25                80
 01/26/2023   21:45:06   (  -0.00,-128.21) (   0.67,-125.06)  359.11                80
 01/28/2023   10:06:55   (   0.00,-128.27) (   0.45,-130.34)  235.46                80
 01/29/2023   09:50:50   (   0.00,-128.27) (  -0.56,-125.80)  281.97                80
 01/30/2023   22:12:47   (  -0.00,-128.25) (  -0.65,-131.10)  325.22                80
 01/31/2023   21:51:22   (   0.00,-128.25) (   0.36,-126.56)  191.52                80