A few things you might not mind being reminded of before it’s too late:

ALASKAN WAY VIADUCT CLOSED SATURDAY AND SUNDAY: It’s the regular semiannual maintenance closure, scheduled for 6 am-6 pm each day. Sunday, they often wrap up earlier, but don’t take it for granted until and unless it happens.

FIREWORKS SATURDAY NIGHT: After the Elliott Bay fireworks show that caught so many people off-guard a few weeks ago, we found and published advance word of another one that’s now just days away: General Construction (which has a location in West Seattle, on the Duwamish) is celebrating its centennial with fireworks off Pier 66 downtown this Saturday night. The company sent word today that 8:30 pm is the planned showtime.

EARTH HOUR: That, by the way, is right at the start of Earth Hour, when you’re invited to turn everything off for an hour to save power and make a statement. 8:30-9:30 pm Saturday. The Space Needle‘s supposed to go dark again this time around.

FRIDAY AFTERNOON HIKE: Just got word that the Nature Consortium‘s regular monthly hike through the West Duwamish Greenbelt is a little later than usual this month – Friday afternoon, 1 pm, meet at 14th/Holly, RSVP to lisa@naturec.org or 206-923-0853.

FREE CONCERT FRIDAY NIGHT: Also just got a note about West Seattle Jazz Night, 7 pm Friday at Madison Middle School, with performances by musicians from Madison, Denny and Chief Sealth, plus the Seattle Women’s Jazz Orchestra. Free!

LOTS more in the WSB Events calendar, for this weekend and way beyond.