Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2021 11 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/27/2021   10:13:08   (   0.03,-128.26) (   0.90,-132.05)  432.05                80
 11/28/2021   09:57:03   (   0.04,-128.24) (  -0.13,-127.51)   82.70                80
 11/30/2021   21:57:31   (  -0.03,-128.19) (  -0.06,-128.28)   10.06                80
 12/03/2021   10:00:32   (   0.02,-128.12) (   0.20,-129.01)  101.65                80
 12/04/2021   09:44:26   (   0.04,-128.09) (  -0.76,-124.47)  412.11                80
 12/05/2021   22:03:41   (  -0.01,-128.04) (  -0.38,-129.78)  197.22                80
 12/06/2021   21:47:35   (  -0.03,-128.01) (   0.59,-125.23)  316.27                80
 12/08/2021   10:06:41   (   0.00,-127.95) (   0.58,-130.50)  290.59                80
 12/09/2021   09:50:35   (   0.01,-127.92) (  -0.45,-125.97)  222.66                80
 12/10/2021   22:09:50   (   0.01,-127.87) (  -0.76,-131.27)  387.27                80