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Physical Measurement Laboratory / Time and Frequency Division

Time Realization and Distribution Group

WWV and WWVH Broadcast Outages

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The tables below show the date and times when NIST Radio Stations WWV and WWVH were off the air. During normal operation the signals are available 24 hours per day, 7 days a week. The tables list all outages since January 1, 2000 that lasted for more than 5 minutes.

WWV Broadcast Outages

DateMJDBegan (UTC)Ended (UTC)Frequency
08-15-202360171214622312.5 MHz
07-20-202360146150016152.5, 5, 10, 15, 20, 25 MHz
08-24-202259815163616572.5, 5, 10, 15, 20, 25 MHz
07-15-202159410141514232.5 MHz
07-09-2021594040415

0641 

*carrier only until 1557 on 59405

5 MHz
03-15-2021592880001001515 MHz
05-20-202058989012202265 MHz
06-25-2019586591927230425 MHz
09-17-201858378083912372.5 MHz
12-26-2017581131530161515 MHz
08-30-201757995183519015 MHz
03-07-201757819232523472.5 MHz
02-23-201757807143916262.5, 5, 10, 15, 20, 25 MHz
02-22-201757806193621562.5, 5, 10, 15, 20, 25 MHz
02-21-201757805160818482.5, 5, 10, 15, 20, 25 MHz

09-15-2014

56915

1645

1654

15 MHz

09-15-2014

56915

1556

1602

5 MHz

08-26-2014

56895

0047

0141

2.5 MHz

05-22-201456799060213205 MHz
03-05-201456721040914215, 10 MHz
06-13-201256091214322502.5, 5, 10, 15, 20 MHz
09-04-201155808060707195 MHz
06-23-201155735041205105 MHz
12-10-201055540172617592.5, 5, 10, 15, 20 MHz
12-01-201055531160616572.5, 5, 10, 15, 20 MHz

01-01-2009

54832050406152.5, 5, 10, 15, 20 MHz
01-22-200854487173521002.5 MHz
09-18-200754361150215342.5, 5, 10, 15, 20 MHz
06-17-200754268----00562.5, 5, 10, 15, 20 MHz
06-16-2007522672154----2.5, 5, 10, 15, 20 MHz
05-07-200754227154421492.5, 5, 10, 15, 20 MHz
11-01-2004533100340044020 MHz
12-01-2003529742126213110 MHz
12-01-200352974212621315 MHz
09-22-2002525390640072520 MHz
11-19-200152232---160010 MHz
11-17-2001522302200---10 MHz
10-13-200152195183519105 MHz
11-03-2000518510700140020 MHz
09-24-2000518111010110510 MHz
06-26-2000517212315234020 MHz
01-18-2000515510000140020 MHz

 

WWVH Broadcast Outages

DateMJDBegan (UTC)Ended (UTC)Frequency
10-26-202360243001600222.5 MHz
04-19-202360053015902045 MHz
10-06-2022598582217225610 MHz
12-03-202159520222222302.5 MHz
07-27-202059057 14422.5 MHz
07-27-202059057 14405, 10, 15 MHz
07-26-2020590562009 2.5, 5, 10, 15 MHz
02-07-202058886214023515 MHz
01-05-2020588530450045810 MHz
12-31-201657753080509252.5, 5, 10, 15 MHz
11-27-20165772019350026 (11/28/2016)2.5 MHz
11-27-20165772019350028 (11/28/2016)5 MHz
11-27-20165772019350026 (11/28/2016)10 MHz
11-27-20165772019350026 (11/28/2016)15 MHz
11-27-201657719192619315 MHz
01-09-201657396142617095 MHz
12-11-201557367031805205 MHz
10-29-201557324185421272.5, 5, 10, 15 MHz
08-21-2008546991935200315 MHz
01-30-2007541300809090710 MHz
01-16-2007541162034204810 MHz
01-16-2007541160740170310 MHz
04-03-200653828030303085 MHz
02-07-200653773161217315 MHz
11-10-200553684153415405 MHz
01-15-200453019230023062.5 MHz
08-08-200352859131115422.5 MHz
Time and frequency
Created March 5, 2010, Updated April 15, 2024