Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 11 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)
 11/19/2020   10:07:43   (  -0.06,-127.55) (   0.56,-130.29)  312.05                80
 11/20/2020   09:46:19   (  -0.08,-127.59) (  -0.51,-125.77)  208.56                80
 11/21/2020   22:10:53   (   0.05,-127.64) (  -0.74,-131.06)  390.11                80
 11/22/2020   21:49:29   (   0.07,-127.68) (   0.32,-126.54)  130.10                80
 11/24/2020   10:13:55   (  -0.04,-127.75) (   0.87,-131.80)  461.61                80
 11/25/2020   09:52:31   (  -0.06,-127.79) (  -0.19,-127.28)   58.92                80
 11/27/2020   21:58:20   (   0.04,-127.87) (   0.01,-128.04)   19.50                80
 11/30/2020   10:01:21   (  -0.02,-127.96) (   0.17,-128.77)   92.65                80
 12/01/2020   09:39:57   (  -0.04,-127.99) (  -0.89,-124.25)  426.99                80
 12/02/2020   22:04:31   (   0.00,-128.03) (  -0.35,-129.54)  172.57                80