Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2021 12 9.  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)
 12/22/2021   18:44:21   (  77.38,-124.79) 12/22/2021   18:45:31  (  77.44,-123.16)   39.93                70
 12/22/2021   19:35:21   ( -77.57,  43.41) 12/22/2021   19:36:19  ( -77.59,  43.46)    2.19                58
 12/22/2021   20:26:16   (  77.59,-149.24) 12/22/2021   20:27:04  (  77.57,-149.15)    2.63                48
 12/22/2021   21:17:21   ( -77.58,  17.95) 12/22/2021   21:17:49  ( -77.60,  18.05)    3.22                28
 12/22/2021   22:08:16   (  77.59,-174.71) 12/22/2021   22:08:35  (  77.62,-174.76)    3.57                19
 12/22/2021   22:59:20   ( -77.62,  -7.32) 12/22/2021   22:59:19  ( -77.60,  -7.36)    2.35                 1
 12/22/2021   23:50:16   (  77.60, 159.83) 12/22/2021   23:50:05  (  77.63, 159.83)    3.51                11
 12/23/2021   00:41:20   ( -77.63, -32.78) 12/23/2021   00:40:49  ( -77.61, -32.77)    1.85                31
 12/23/2021   01:32:15   (  77.64, 134.57) 12/23/2021   01:31:35  (  77.64, 134.42)    3.70                40
 12/23/2021   02:23:20   ( -77.63, -58.25) 12/23/2021   02:22:19  ( -77.62, -58.18)    2.24                61