Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2021 7 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/10/2021   21:40:05   (   0.03,-127.91) (   1.03,-123.61)  490.09                80
 07/12/2021   09:59:14   (  -0.05,-127.93) (   0.13,-128.89)  108.73                80
 07/13/2021   09:43:10   (  -0.04,-127.89) (  -0.84,-124.35)  403.69                80
 07/14/2021   22:02:27   (   0.06,-127.76) (  -0.35,-129.66)  216.39                80
 07/15/2021   21:46:22   (   0.05,-127.72) (   0.63,-125.12)  295.93                80
 07/17/2021   10:05:32   (  -0.07,-127.74) (   0.53,-130.40)  303.32                80
 07/18/2021   09:49:27   (  -0.06,-127.70) (  -0.45,-125.86)  208.43                80
 07/19/2021   22:08:45   (   0.08,-127.55) (  -0.74,-131.17)  413.24                80
 07/20/2021   21:52:41   (   0.08,-127.50) (   0.30,-126.64)   98.10                80
 07/23/2021   09:55:46   (  -0.09,-127.46) (  -0.12,-127.38)    8.49                80