Editing in a later comment at 7:51, it is now just light enough to start my biking, though my cutoff for departure has already passed at 7:40. Any later start would have me arriving too late at my desk, especially now early in the bike commuting season, when I am a bit slower in transit.
In these weeks after the change to Daylight Saving Time and before the change to Standard Time in the fall, I watch carefully for the point when I can safely be on the roads. I also consult several online calculators for understanding when the daylight will be suitable for biking. One site provides a data presentation, one line for each day. (From the link, you need to select your location and then select See sunrise/sunset.) This presentation can be set for the current week or the current month. You can also chose among 3 groups of information for the columns.
|timeanddate.com : week sun times|
|timesunrisesunset.com : quarter sun times|
|sunrisesunset.com : March calendar|
|trueknowledge.com : sunrise today|