Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2021 7 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/25/2021   21:56:20   (   0.12,-127.63) (   0.01,-128.17)   61.70                80
 07/26/2021   21:40:16   (   0.11,-127.66) (   0.99,-123.64)  458.58                80
 07/28/2021   09:59:26   (  -0.13,-127.83) (   0.10,-128.93)  124.55                80
 07/29/2021   09:43:21   (  -0.12,-127.86) (  -0.88,-124.39)  395.62                80
 07/30/2021   22:02:39   (   0.14,-127.80) (  -0.31,-129.70)  216.61                80
 07/31/2021   21:46:35   (   0.13,-127.83) (   0.73,-125.17)  303.26                80
 08/02/2021   10:05:45   (  -0.15,-127.99) (   0.41,-130.45)  280.70                80
 08/03/2021   09:49:41   (  -0.14,-128.02) (  -0.63,-125.93)  238.75                80
 08/04/2021   22:08:58   (   0.17,-127.95) (  -0.56,-131.24)  374.68                80
 08/05/2021   21:52:54   (   0.16,-127.97) (   0.42,-126.70)  144.33                80
 08/07/2021   10:12:04   (  -0.19,-128.12) (   0.66,-131.99)  440.96                80