Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2023 1 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/19/2023   22:16:23   (  -0.03,-130.04) (  -0.64,-132.70)  302.77                80
 01/20/2023   22:00:17   (  -0.03,-129.63) (   0.29,-128.15)  168.42                80
 01/22/2023   10:19:24   (   0.03,-129.00) (   1.02,-133.38)  499.87                80
 01/23/2023   10:00:38   (   0.03,-128.58) (   0.09,-128.84)   28.60                80
 01/24/2023   09:44:33   (   0.03,-128.17) (  -0.85,-124.29)  442.58                80
 01/25/2023   22:03:47   (  -0.04,-127.52) (  -0.50,-129.55)  232.10                80
 01/26/2023   21:47:42   (  -0.04,-127.10) (   0.44,-125.00)  238.93                80
 01/28/2023   10:06:47   (   0.04,-126.47) (   0.92,-130.23)  429.80                80
 01/29/2023   09:50:41   (   0.04,-126.05) (  -0.03,-125.68)   41.22                80
 01/31/2023   21:51:10   (  -0.05,-124.97) (  -0.35,-126.40)  162.89                80
 02/01/2023   21:35:04   (  -0.05,-124.55) (   0.54,-121.84)  307.58                80