Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2019 12 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/19/2019   07:05:41   (   0.09,-127.95) (  -0.05,-128.58)   71.49                80
 12/21/2019   06:50:50   (   0.09,-127.94) (   0.59,-125.63)  264.03                80
 12/21/2019   19:14:45   (  -0.08,-127.90) (   0.54,-130.77)  327.22                80
 12/23/2019   18:59:54   (  -0.08,-127.89) (  -0.11,-127.82)    8.08                80
 12/25/2019   18:47:42   (  -0.08,-127.87) (  -0.71,-124.86)  342.28                80
 12/26/2019   07:11:46   (   0.07,-127.91) (  -0.40,-130.05)  243.10                80
 12/28/2019   06:56:55   (   0.07,-127.89) (   0.27,-127.10)   91.10                80
 12/30/2019   06:44:43   (   0.06,-127.87) (   0.87,-124.13)  425.09                80
 12/30/2019   19:08:37   (  -0.05,-127.82) (   0.26,-129.28)  166.76                80