Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 12 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/26/2020   10:13:46   (   0.14,-128.25) (   0.91,-131.79)  402.19                80
 12/27/2020   09:52:21   (   0.12,-128.25) (  -0.10,-127.26)  113.47                80
 12/28/2020   22:16:57   (  -0.17,-128.27) (  -1.12,-132.56)  487.95                80
 12/29/2020   21:55:33   (  -0.15,-128.27) (  -0.11,-128.03)   27.12                80
 01/01/2021   10:01:16   (   0.17,-128.22) (   0.31,-128.76)   62.00                80
 01/02/2021   09:39:52   (   0.15,-128.21) (  -0.76,-124.24)  452.69                80
 01/03/2021   22:04:28   (  -0.19,-128.22) (  -0.51,-129.53)  149.91                80
 01/04/2021   21:43:04   (  -0.16,-128.21) (   0.56,-125.01)  364.43                80
 01/06/2021   10:07:31   (   0.21,-128.16) (   0.65,-130.28)  240.54                80
 01/07/2021   09:46:07   (   0.18,-128.15) (  -0.36,-125.75)  273.66                80
 01/08/2021   22:10:42   (  -0.23,-128.15) (  -0.90,-131.04)  329.55                80