Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2022 12 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)
 12/20/2022   21:40:55   (  -0.02,-127.19) (   0.85,-123.47)  424.59                80
 12/22/2022   10:00:04   (   0.01,-127.18) (   0.35,-128.74)  178.25                80
 12/23/2022   09:44:00   (   0.01,-127.12) (  -0.66,-124.21)  332.50                80
 12/24/2022   22:03:18   (  -0.01,-126.99) (  -0.59,-129.51)  287.64                80
 12/25/2022   21:47:14   (  -0.01,-126.93) (   0.42,-124.98)  222.84                80
 12/27/2022   10:06:24   (  -0.00,-126.91) (   0.76,-130.25)  380.75                80
 12/28/2022   09:50:20   (   0.00,-126.86) (  -0.25,-125.72)  129.71                80
 12/29/2022   22:09:37   (   0.01,-126.72) (  -0.99,-131.01)  490.50                80
 12/30/2022   21:53:34   (   0.00,-126.67) (   0.03,-126.49)   20.02                80
 01/02/2023   09:54:00   (  -0.00,-126.58) (   0.14,-127.23)   73.42                80