Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2022 6 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/20/2022   22:08:27   (   0.07,-128.43) (  -0.49,-131.05)  298.24                80
 06/21/2022   21:52:23   (   0.06,-128.44) (   0.46,-126.51)  219.57                80
 06/23/2022   10:11:33   (  -0.09,-128.46) (   0.67,-131.79)  380.20                80
 06/24/2022   09:55:30   (  -0.08,-128.47) (  -0.34,-127.27)  136.99                80
 06/25/2022   22:14:48   (   0.11,-128.48) (  -0.83,-132.58)  468.42                80
 06/26/2022   21:58:45   (   0.10,-128.48) (   0.19,-128.05)   48.68                80
 06/29/2022   09:59:10   (  -0.12,-128.50) (  -0.02,-128.80)   35.20                80
 06/30/2022   09:43:07   (  -0.10,-128.50) (  -1.04,-124.28)  481.34                80
 07/01/2022   22:02:25   (   0.14,-128.49) (  -0.12,-129.59)  125.34                80
 07/02/2022   21:46:22   (   0.12,-128.50) (   0.90,-125.07)  391.23                80