Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2022 4 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/17/2022   22:08:36   (  -0.12,-128.38) (  -0.75,-131.06)  306.37                80
 04/18/2022   21:52:31   (  -0.12,-128.37) (   0.30,-126.54)  209.39                80
 04/20/2022   10:14:18   (   0.12,-128.33) (   0.91,-131.80)  395.19                80
 04/21/2022   09:52:52   (   0.13,-128.32) (  -0.08,-127.26)  119.83                80
 04/22/2022   22:14:48   (  -0.12,-128.31) (  -1.06,-132.57)  485.29                80
 04/23/2022   21:58:43   (  -0.13,-128.29) (  -0.07,-128.03)   29.81                80
 04/26/2022   10:01:45   (   0.13,-128.23) (   0.22,-128.77)   60.07                80
 04/27/2022   09:40:19   (   0.14,-128.21) (  -0.78,-124.23)  454.88                80
 04/28/2022   22:02:15   (  -0.13,-128.20) (  -0.41,-129.53)  150.60                80
 04/29/2022   21:46:09   (  -0.13,-128.19) (   0.59,-124.99)  364.37                80