Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 11 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/19/2019   22:08:36   (  -0.06,-128.48) (  -0.64,-131.13)  302.85                80
 11/20/2019   21:52:31   (  -0.07,-128.47) (   0.35,-126.60)  213.19                80
 11/22/2019   10:11:38   (   0.05,-128.49) (   0.81,-131.87)  385.10                80
 11/23/2019   09:55:32   (   0.06,-128.49) (  -0.19,-127.34)  130.71                80
 11/24/2019   22:14:49   (  -0.04,-128.43) (  -0.96,-132.65)  480.04                80
 11/25/2019   21:58:43   (  -0.05,-128.42) (   0.04,-128.11)   35.63                80
 11/28/2019   09:59:05   (   0.04,-128.43) (   0.12,-128.85)   48.07                80
 11/29/2019   09:43:00   (   0.05,-128.41) (  -0.88,-124.31)  467.05                80
 11/30/2019   22:02:15   (  -0.03,-128.35) (  -0.32,-129.61)  144.80                80
 12/01/2019   21:46:09   (  -0.04,-128.33) (   0.68,-125.08)  370.20                80