Actually Flickr is a bit more generous as the limit is per month:
How many photos and videos can I upload for free?
When you have a free Flickr account, you can upload 2 videos and 300MB worth of photos each calendar month.
While the 300MB bandwidth limit for photos is firm, we do allow a little leeway for video in case you encounter transcoding errors, sound sync weirdness, etc. You will be able to delete and upload a new video. Please note, that if we determine you’re abusing your free video upload privileges, we may block your ability to share video.
Your upload limits are reset to zero at midnight in Pacific Time Zone (Flickr headquarters time) on the first of each calendar month. You can't recover any of your monthly allowance by deleting photos. If you have a free account, you'll see your limit on the upload page.
If you find yourself hitting your limit, try a pro account. Or, you can shoot your photos at a lower resolution or resize them to be more "web-friendly" (like 300KB instead of 5MB).