Speeding

What time do 20 mph. Speed limit take effect in WA – the state? – Please list your source?

I got a speeding ticket (my first!) This morning for going 25 mph in a school zone. However, the ticket was at 7:09 AM. and I'm pretty sure that school zones are not in force until 7:30 AM. Am I wrong? If not where I can pull this information to the judge? I live in Washington State.

It is a signal just before school zone that tells you the speed limit and the hours are in effect. Back to where I stood and see the sign. If you're right, take a picture signal and the surrounding area to show the judge in court. At least so in my state.

Union Hill Road Speeding Ticket