Free Meals in Philadelphia
This Wikidelphia resource page helps you find free meals in Philadelphia.
Philadelphia's Office Of Homeless Services offers this schedule: Free Meals
Here is a similar resource in PDF format: Free Meals in Philadelphia.
Since lists like the above two aren't always kept up to date, it's probably a good idea to contact the place first before you show up there.
2-1-1 SEPA says, "People could also dial 211 to call the resource hotline in their area or text their zip code to 898211 to locate resources."
New York-based WhyHunger says, "Call 1(800) 5-HUNGRY, text your zip code to 1-800-548-6479, or use the form below to locate a local emergency food provider and other support services."