user-1: There were only 67 blocks mined on the 2021-06-27 (UTC).
Is this the lowest number of blocks we have ever seen in a day? Or have we seen numbers counts in the past?

user-1: It was lowest since 2011 according to chart shared in a tweet thread:

But it was not lowest overall because there were fewer blocks mined in 24h a few times in 2009.


-1: <p>There were only 67 blocks mined on the <a href="https://blockchair.com/bitcoin/blocks?q=time(2021-06-28%2000:00:00..2021-06-27%2000:00:00)" rel="nofollow noreferrer">2021-06-27 (UTC)</a>.</p>
<p>Is this the lowest number of blocks we have ever seen in a day? Or have we seen numbers counts in the past?</p>
 -1: <p>It was lowest since 2011 according to chart shared in a tweet <a href="https://twitter.com/glassnode/status/1409464805874937862" rel="nofollow noreferrer">thread</a>:</p>
<p><a href="https://i.stack.imgur.com/cF36U.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/cF36U.png" alt="glassnode-blocks-chart" /></a></p>
<p>But it was not lowest overall because there were fewer blocks mined in 24h a few times in 2009.</p>
<p><a href="https://i.stack.imgur.com/3iKfP.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/3iKfP.png" alt="blocks-2009" /></a></p>
