Question about the Premium subscription length

[victalo]

This question might me seem like a cheapskate lol, but I was wondering, does the Premium subscription expire 30 days after purchasing at like 12:01am, or does it last exactly 30 days from the time you bought it? For example, let's say I bought it on June 1 at 4:30pm.

• Does it expire right at 12:01am when it becomes July 1?
• Or does it expire at 4:30pm on July 1 - 30 days exactly from the time I bought it?

I'm basically trying to decide if I should wait until tomorrow morning to buy Spotify Premium, since I'll get a full day of it if it expires at 12:01am, 30 days from when I bought it, or if I should buy it now if it expires from the exact I bought it.