Simultaneous Nadir Overpasses (SNOs) between NPP and GCOM-C
TLE Epoch: 2021 12 9.  Predictions up to the next  14.0 days:

     Date     Time(NPP) NPP Lat/Lon Date Time(GCOM-C) GCOM-C Lat/Lon    Distance(km)  Time Diff(sec)
 12/20/2021   11:44:12   ( -69.58,-178.84) 12/20/2021   11:45:21  ( -69.53,-177.12)   66.96                69
 12/20/2021   12:34:46   (  68.93, -10.61) 12/20/2021   12:35:59  (  68.93, -10.56)    2.20                73
 12/20/2021   13:25:29   ( -68.90, 156.75) 12/20/2021   13:26:30  ( -68.89, 156.75)    2.03                61
 12/20/2021   14:16:15   (  68.89, -35.93) 12/20/2021   14:16:57  (  68.88, -35.87)    2.67                42
 12/20/2021   15:06:58   ( -68.86, 131.43) 12/20/2021   15:07:28  ( -68.83, 131.44)    3.09                30
 12/20/2021   15:57:44   (  68.85, -61.24) 12/20/2021   15:57:55  (  68.83, -61.18)    3.45                11
 12/20/2021   16:48:26   ( -68.76, 106.19) 12/20/2021   16:48:26  ( -68.78, 106.13)    2.79                 0
 12/20/2021   17:39:12   (  68.75, -86.49) 12/20/2021   17:38:53  (  68.78, -86.48)    2.85                19
 12/20/2021   18:29:55   ( -68.72,  80.87) 12/20/2021   18:29:24  ( -68.73,  80.83)    1.93                31
 12/20/2021   19:20:41   (  68.71,-111.80) 12/20/2021   19:19:51  (  68.72,-111.79)    1.86                50
 12/20/2021   20:11:24   ( -68.68,  55.55) 12/20/2021   20:10:22  ( -68.67,  55.52)    1.39                62
 12/20/2021   21:02:06   (  68.45,-136.84) 12/20/2021   21:00:53  (  68.45,-137.38)   22.24                73
 12/20/2021   21:52:41   ( -67.99,  31.07) 12/20/2021   21:51:31  ( -68.03,  29.45)   67.27                70