Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 1 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 01/10/2021   19:02:20   (   0.05,-128.15) (  -0.01,-127.80)   39.58                80
 01/12/2021   18:50:08   (   0.06,-128.11) (  -0.65,-124.84)  372.07                80
 01/13/2021   07:08:52   (  -0.03,-128.08) (  -0.46,-130.04)  222.83                80
 01/15/2021   06:59:20   (  -0.03,-128.04) (   0.18,-127.08)  109.57                80
 01/15/2021   19:17:56   (  -0.00,-128.06) (   0.87,-132.25)  475.57                80
 01/17/2021   06:47:07   (  -0.05,-128.01) (   0.77,-124.11)  442.09                80
 01/17/2021   19:05:43   (   0.01,-128.02) (   0.29,-129.28)  143.17                80
 01/19/2021   18:56:11   (   0.01,-127.98) (  -0.36,-126.33)  188.95                80
 01/20/2021   07:14:55   (   0.02,-127.94) (  -0.74,-131.52)  406.76                80
 01/22/2021   07:02:42   (   0.02,-127.90) (  -0.15,-128.55)   75.19                80