Daily Shards

I have a question. Is the shards per day system based in Lopdo's time zone or something else? Because I have gotten shards for a day after the day has technically ended for my time zone i.e. 1AM and then later have gotten new shards for that day at about 10AM after waking up. I find this odd as the "daily" shards isn't actually going on a precisely day to day basis for me.
Hope Someone can solve this mystery for me.
Hope Someone can solve this mystery for me.
