Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2021 2 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)
 02/18/2021   10:01:22   (  -0.19,-127.96) (   0.01,-128.86)  102.36                80
 02/19/2021   09:39:58   (  -0.19,-127.99) (  -1.02,-124.33)  417.13                80
 02/20/2021   22:01:54   (   0.18,-128.07) (  -0.15,-129.64)  178.02                80
 02/21/2021   21:45:50   (   0.18,-128.10) (   0.88,-125.11)  341.52                80
 02/23/2021   10:07:37   (  -0.17,-128.10) (   0.32,-130.37)  258.68                80
 02/24/2021   09:46:13   (  -0.17,-128.12) (  -0.71,-125.84)  260.00                80
 02/25/2021   22:08:08   (   0.16,-128.19) (  -0.52,-131.14)  336.94                80
 02/26/2021   21:52:03   (   0.17,-128.21) (   0.52,-126.61)  181.92                80
 02/28/2021   10:13:51   (  -0.16,-128.21) (   0.69,-131.87)  418.34                80
 03/01/2021   09:52:26   (  -0.16,-128.22) (  -0.34,-127.35)   99.76                80
 03/02/2021   22:14:23   (   0.15,-128.28) (  -0.82,-132.65)  498.67                80