Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2022 6 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/21/2022   21:52:23   (   0.06,-128.44) (   0.49,-126.51)  219.56                80
 06/23/2022   10:11:34   (  -0.09,-128.46) (   0.64,-131.80)  380.33                80
 06/24/2022   09:55:29   (  -0.08,-128.47) (  -0.32,-127.26)  136.87                80
 06/25/2022   22:14:49   (   0.11,-128.47) (  -0.80,-132.59)  468.55                80
 06/26/2022   21:58:45   (   0.10,-128.48) (   0.22,-128.06)   48.58                80
 06/29/2022   09:59:11   (  -0.12,-128.50) (  -0.05,-128.81)   35.42                80
 06/30/2022   09:43:07   (  -0.10,-128.50) (  -1.07,-124.28)  480.95                80
 07/01/2022   22:02:26   (   0.14,-128.49) (  -0.09,-129.60)  125.73                80
 07/02/2022   21:46:21   (   0.12,-128.49) (   0.87,-125.06)  390.82                80
 07/04/2022   10:05:32   (  -0.15,-128.50) (   0.26,-130.35)  210.12                80