Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2023 1 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/18/2023   09:57:09   (   0.02,-130.69) (  -0.73,-127.44)  371.88                80
 01/19/2023   22:16:23   (  -0.03,-130.04) (  -0.64,-132.70)  302.79                80
 01/20/2023   22:00:17   (  -0.03,-129.63) (   0.29,-128.15)  168.37                80
 01/22/2023   10:19:24   (   0.03,-129.00) (   1.02,-133.38)  499.94                80
 01/23/2023   10:00:38   (   0.03,-128.58) (   0.09,-128.84)   28.69                80
 01/24/2023   09:44:33   (   0.03,-128.17) (  -0.84,-124.29)  442.47                80
 01/25/2023   22:03:47   (  -0.04,-127.52) (  -0.51,-129.55)  232.26                80
 01/26/2023   21:47:42   (  -0.04,-127.10) (   0.43,-125.00)  238.76                80
 01/28/2023   10:06:48   (   0.04,-126.47) (   0.88,-130.24)  430.01                80
 01/29/2023   09:50:42   (   0.04,-126.05) (  -0.06,-125.69)   41.02                80
 01/31/2023   21:51:10   (  -0.05,-124.97) (  -0.39,-126.40)  163.23                80