WWVB Time Code Format Diagram

This is by-and-large the same diagram of the WWVB Time Code Format that you’ll find there, but with:

• the PR frame reference pulse identified
• the last four bits clearly labeled
• some verbiage chopped out

Memo to Self: Remember that…

• The time code applies to the minute that’s currently happening, so …
• The PR pulse happens before the rest of the time code arrives
• You must know the end-of-month date to apply the leap second bit, but EOM isn’t part of the data stream