Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2021 5 20.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-19) NOAA-19 Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/23/2021   10:59:59   ( -78.30, 168.20) 05/23/2021   11:01:13  ( -78.31, 168.28)    2.03                74
 05/23/2021   11:51:03   (  78.33, -24.38) 05/23/2021   11:51:58  (  78.29, -24.34)    3.78                55
 05/23/2021   12:41:58   ( -78.31, 142.78) 05/23/2021   12:42:42  ( -78.31, 142.89)    2.45                44
 05/23/2021   13:33:02   (  78.34, -49.80) 05/23/2021   13:33:28  (  78.33, -49.95)    3.41                26
 05/23/2021   14:23:58   ( -78.32, 117.37) 05/23/2021   14:24:12  ( -78.31, 117.51)    3.46                14
 05/23/2021   15:15:02   (  78.35, -75.21) 05/23/2021   15:14:58  (  78.34, -75.33)    3.22                 4
 05/23/2021   16:05:58   ( -78.33,  91.95) 05/23/2021   16:05:43  ( -78.35,  91.90)    2.04                15
 05/23/2021   16:57:03   (  78.33,-100.86) 05/23/2021   16:56:28  (  78.34,-100.72)    3.36                35
 05/23/2021   17:47:58   ( -78.35,  66.53) 05/23/2021   17:47:13  ( -78.35,  66.52)    0.62                45
 05/23/2021   18:39:03   (  78.34,-126.28) 05/23/2021   18:37:58  (  78.34,-126.10)    3.89                65
 05/23/2021   19:29:58   ( -78.36,  41.12) 05/23/2021   19:28:43  ( -78.35,  41.13)    0.80                75