The exact price can be confirmed here: https://www.bitstamp.net/markets/btc/usd/ Someone please confirm the timezone. Here at 21 June 00:00 AM I see: 35516.74 I'm in CEST.
is what I see - but I dont see where it allows for timezones so maybe that is whatever timezone it is detecting for me?
You are -6 hours of CET so you should check the price of BTC at Jun 20, 2021 18:00 (06:00 PM) to match with Jun 21, 2021 00:00.