Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2020 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)
 12/18/2020   18:56:20   (   0.17,-128.23) (  -0.27,-126.29)  220.46                80
 12/19/2020   07:15:04   (  -0.14,-128.24) (  -0.84,-131.48)  369.01                80
 12/21/2020   07:02:52   (  -0.15,-128.26) (  -0.24,-128.52)   31.16                80
 12/23/2020   06:53:21   (  -0.16,-128.27) (   0.43,-125.58)  306.67                80
 12/23/2020   19:11:56   (   0.13,-128.27) (   0.63,-130.74)  280.82                80
 12/25/2020   19:02:25   (   0.13,-128.27) (   0.02,-127.78)   56.24                80
 12/27/2020   18:50:13   (   0.14,-128.28) (  -0.60,-124.82)  392.70                80
 12/28/2020   07:08:56   (  -0.11,-128.28) (  -0.51,-130.02)  197.88                80
 12/30/2020   06:59:24   (  -0.12,-128.28) (   0.11,-127.06)  137.83                80
 12/30/2020   19:18:00   (   0.09,-128.27) (   0.95,-132.22)  449.70                80