When stats update in Spotify for Artists
Your stats update once a day at approximately 3 PM EST / 8 PM UTC.
We count days based on the UTC timezone. So if you release a track at 7 PM EST, you won't see any stats for that release day because it's already 12 AM UTC.
You get a live stream count for the first 7 days of a new release. The live stream count updates every 2 seconds.