I would start going to the story times for babies at the closest library to you. Or maybe a mommy-baby yoga class, eg willow street or stroller strides. This way you could find something that works into your schedule.

I'm on two Yahoo lists for Silver Spring moms that are useful. They are more for exchanging info than setting up play dates but they are flexible so you could always try to set up something yourself:
ssmoms_2003 (the better one--more traffic/members)
moms of silver spring

Also don't forget about the meetup section of this site.

Wheaton area moms only "accepts" members who stay at home. I asked and they don't make exceptions :-/

Wheaton area moms is meeting this Thursday at brookside nature center at 10 am:
http://www.montgomeryparks.org/nature_centers/brookside/

Look for the mom with twin girls. Also this the nature center which is different than brookside gardens.

Change your day off to Mondays and go to Takoma Park Community Playtime.
http://takomaplaytime.org/

Check out meetup.com and search for moms groups in Montgomery County. There are a couple

Ugh, don't know why all those ? are in the title. I'm not the riddler.

Good morning,

I am a new mom of a 7 month old. Our family lives in the Holiday Park neighborhood of Silver Spring. I was wondering if anyone knew of any Yahoo or Google Group (or similar) or in person groups for parents or moms or communities in the Kensington, White Flint, Silver Spring, Rockville, Wheaton or Bethesda areas? I already belong to the Moms Club, TakomaPAKK, and CafeMontgomery. I also take parenting classes at a Waldorf School (yes, really am a hippie inside).

I'm looking to connect with other local parents and make some Mom friends. I work and am off on Thursdays.

Thank you.