Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 1 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 01/21/2018   19:33:51   (   0.02,-134.79) (   0.15,-135.48)   77.66                80
 01/23/2018   19:18:59   (   0.02,-134.88) (  -0.46,-132.52)  267.70                80
 01/24/2018   07:43:03   (  -0.02,-134.92) (  -0.64,-137.71)  317.53                80
 01/26/2018   07:28:12   (  -0.02,-134.99) (   0.03,-134.76)   26.63                80
 01/28/2018   07:16:00   (  -0.01,-135.06) (   0.65,-131.80)  369.92                80
 01/28/2018   19:37:16   (   0.01,-135.05) (   0.42,-136.96)  217.59                80
 01/30/2018   19:27:44   (   0.02,-135.10) (  -0.21,-134.00)  125.14                80
 01/31/2018   07:49:07   (  -0.02,-135.15) (  -0.88,-139.19)  460.18                80
 02/01/2018   19:15:32   (   0.03,-135.16) (  -0.84,-131.04)  467.80                80
 02/02/2018   07:36:55   (  -0.03,-135.20) (  -0.25,-136.23)  117.71                80