Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2021 11 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/12/2021   09:57:04   (   0.11,-128.44) (  -0.11,-127.53)  105.04                80
 11/14/2021   22:00:19   (  -0.10,-128.43) (  -0.06,-128.31)   14.52                80
 11/17/2021   10:00:46   (   0.09,-128.43) (   0.20,-129.06)   71.60                80
 11/18/2021   09:44:41   (   0.10,-128.42) (  -0.75,-124.52)  444.12                80
 11/19/2021   22:04:01   (  -0.08,-128.40) (  -0.37,-129.84)  163.34                80
 11/20/2021   21:47:56   (  -0.09,-128.39) (   0.58,-125.30)  352.01                80
 11/22/2021   10:07:06   (   0.06,-128.38) (   0.56,-130.58)  251.18                80
 11/23/2021   09:51:03   (   0.08,-128.36) (  -0.45,-126.05)  263.64                80
 11/24/2021   22:10:21   (  -0.05,-128.33) (  -0.72,-131.36)  345.12                80
 11/25/2021   21:54:18   (  -0.06,-128.31) (   0.30,-126.83)  169.49                80