Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 12 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)
 12/19/2020   21:43:03   (  -0.06,-128.25) (   0.69,-125.01)  369.35                80
 12/21/2020   10:07:29   (   0.10,-128.24) (   0.58,-130.26)  231.45                80
 12/22/2020   09:46:06   (   0.08,-128.25) (  -0.48,-125.75)  285.08                80
 12/23/2020   22:10:42   (  -0.12,-128.28) (  -0.74,-131.05)  315.37                80
 12/24/2020   21:49:18   (  -0.10,-128.28) (   0.27,-126.52)  200.67                80
 12/26/2020   10:13:45   (   0.14,-128.26) (   0.94,-131.78)  401.21                80
 12/27/2020   09:52:22   (   0.12,-128.26) (  -0.13,-127.26)  114.72                80
 12/28/2020   22:16:57   (  -0.17,-128.29) (  -1.15,-132.55)  486.48                80
 12/29/2020   21:55:33   (  -0.15,-128.28) (  -0.07,-128.03)   28.75                80
 01/01/2021   10:01:16   (   0.17,-128.24) (   0.27,-128.77)   59.79                80