Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
2010 WWVB Broadcast Outages
During normal operation, the 60 kHz signal from WWVB is transmitted 24 hours per day, 7 days a week. The table includes periods since January 1, 2010 when the signal was off or intermittent for more than 5 minutes.
| Date | MJD | Began (UTC) | Ended (UTC) |
|---|---|---|---|
| 12-13-2010 | 55543 | 1731 | 1739 |
| 12-10-2010 | 55540 | 1726 | 1759 |
| 10-31-2010 | 55500 | 0310 | 0540 |
| 10-31-2010 | 55500 | 0136 | 0256 |
| 08-17-2010 | 55425 | 0700 | 0803 |
| 08-13-2010 | 55421 | 0327 | 0414 |
| 07-07-2010 | 55384 | 1855 | 1918 |
| 06-07-2010 | 55354 | 2147 | 2154 |
| 06-01-2010 | 55348 | 0826 | 0951 |
| 05-08-2010 | 55324 | 2310 | 2358 |
| 01-24-2010 | 55220 | 1552 | 1652 |
| 01-24-2010 | 55220 | 1325 | 1425 |
Created March 11, 2011, Updated January 9, 2017