Sunrise 6:32 am: The case of the mysterious bicycle

Some time during the construction to expand the bridge over San Francisquito Creek on Sand Hill to four lanes, a red bicycle appeared. It would greet the Dawn Joggers, locked in in one of several locations. They figured it was owned by a construction worker who used it during the day for work or play.

One day the red bicycle had a tire stolen; soon its remaining frame disappeared. About the same time the construction was completed. End of the tethered bicycle?

No, a new, spiffier black bicycle made its appearance. Locked on the north or south side of Sand Hill, it is reliably on view when the DJs pass each morning. The mystery remains: whose bicycle is it? why is it parked on a busy road? does it get ridden during the day and put back each evening?

Footnote to keen observers of increasingly early sunrise: on 5 of the last 10 days the sun has risen two minutes earlier than the day before, as it did today compared to yesterday.