Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2021 12 14.  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   (  77.39,-124.74) 12/22/2021   18:45:32  (  77.46,-123.29)   36.16                71
 12/22/2021   19:35:21   ( -77.58,  43.45) 12/22/2021   19:36:19  ( -77.58,  43.51)    1.47                58
 12/22/2021   20:26:16   (  77.60,-149.20) 12/22/2021   20:27:05  (  77.60,-149.28)    2.11                49
 12/22/2021   21:17:21   ( -77.58,  17.98) 12/22/2021   21:17:49  ( -77.59,  18.10)    2.83                28
 12/22/2021   22:08:16   (  77.60,-174.66) 12/22/2021   22:08:35  (  77.61,-174.69)    1.00                19
 12/22/2021   22:59:20   ( -77.63,  -7.28) 12/22/2021   22:59:19  ( -77.59,  -7.31)    4.08                 1
 12/22/2021   23:50:16   (  77.61, 159.87) 12/22/2021   23:50:05  (  77.61, 159.90)    0.93                11
 12/23/2021   00:41:20   ( -77.64, -32.75) 12/23/2021   00:40:49  ( -77.60, -32.72)    3.86                31
 12/23/2021   01:32:16   (  77.61, 134.41) 12/23/2021   01:31:35  (  77.62, 134.48)    2.01                41
 12/23/2021   02:23:20   ( -77.64, -58.22) 12/23/2021   02:22:20  ( -77.65, -58.33)    2.91                60
 12/23/2021   03:14:16   (  77.62, 108.95) 12/23/2021   03:13:05  (  77.63, 109.07)    3.24                71