Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2021 2 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/15/2021   21:55:40   (   0.20,-127.91) (   0.17,-128.12)   23.10                80
 02/16/2021   21:39:35   (   0.19,-127.95) (   1.20,-123.59)  497.26                80
 02/18/2021   10:01:22   (  -0.19,-127.96) (   0.01,-128.86)  102.47                80
 02/19/2021   09:39:58   (  -0.19,-127.99) (  -1.02,-124.33)  417.02                80
 02/20/2021   22:01:54   (   0.18,-128.07) (  -0.15,-129.64)  178.07                80
 02/21/2021   21:45:50   (   0.18,-128.10) (   0.88,-125.11)  341.49                80
 02/23/2021   10:07:37   (  -0.17,-128.10) (   0.33,-130.37)  258.73                80
 02/24/2021   09:46:13   (  -0.17,-128.12) (  -0.70,-125.84)  259.95                80
 02/25/2021   22:08:08   (   0.16,-128.19) (  -0.51,-131.14)  336.95                80
 02/26/2021   21:52:03   (   0.16,-128.21) (   0.52,-126.61)  181.93                80