Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 1 20.  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) (   0.14,-135.48)   77.65                80
 01/23/2018   19:18:59   (   0.02,-134.88) (  -0.47,-132.52)  267.66                80
 01/24/2018   07:43:03   (  -0.02,-134.92) (  -0.64,-137.71)  317.59                80
 01/26/2018   07:28:12   (  -0.02,-134.99) (   0.04,-134.76)   26.51                80
 01/28/2018   07:16:00   (  -0.01,-135.06) (   0.66,-131.80)  369.74                80
 01/28/2018   19:37:16   (   0.01,-135.04) (   0.41,-136.96)  217.74                80
 01/30/2018   19:27:44   (   0.01,-135.10) (  -0.22,-134.00)  124.93                80
 01/31/2018   07:49:08   (  -0.02,-135.14) (  -0.88,-139.19)  460.45                80
 02/01/2018   19:15:32   (   0.03,-135.15) (  -0.85,-131.04)  467.55                80
 02/02/2018   07:36:56   (  -0.03,-135.20) (  -0.24,-136.24)  118.03                80