Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2021 1 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 01/04/2021   03:17:03   (  -0.35,-128.23) (   0.00,-132.54)  481.12                 0
 01/05/2021   03:03:39   (  -0.36,-128.22) (  -0.61,-129.38)  132.38                80
 01/06/2021   02:54:35   (  -0.36,-128.21) (   0.01,-126.51)  193.33                80
 01/08/2021   15:12:50   (   0.35,-128.16) (   1.12,-131.46)  377.02                80
 01/09/2021   15:01:07   (   0.36,-128.14) (   0.43,-128.60)   51.97                80
 01/10/2021   14:52:04   (   0.36,-128.12) (  -0.20,-125.73)  273.15                80
 01/13/2021   03:10:20   (  -0.35,-128.10) (  -0.98,-130.68)  295.38                80
 01/14/2021   03:01:17   (  -0.36,-128.08) (  -0.31,-127.82)   29.40                80
 01/15/2021   02:49:35   (  -0.37,-128.06) (   0.37,-124.96)  354.24                80
 01/17/2021   15:07:47   (   0.36,-127.99) (   0.82,-129.89)  216.64                80