user114519: For example, can we see, the latest block, somebody got lucky and solved it in 1 minute, but then the next block, nobody solved it until 18 minutes later? (and how can we see it?)

user5406: You can get an overview of the recent blocks by visiting a "block explorer" such as e.g. blockstream.info or blockchair.com. These usually report the timestamps of blocks as seen in the screenshot below. Note that the timestamps in Bitcoin blocks are picked by the block's author and may diverge from the actual time the block was found.

via blockstream.info

user208: Blocks have timestamps, but they are not very accurate. The protocol rules only (roughly) require them to not be more than 1 hour in the past and not more than 2 hours in the future. At least historically, miners have used this flexibility, effectively turning part of the timestamp as an additional nonce field. I don't know if this is still common practice.
Still, this means you can't rely on block timestamps to determine when they were actually created. It is possible to run a Bitcoin node yourself, and just observe when your node learns about every block - if you have decent connectivity, it will generally be within seconds of the block being found. There are also block explorer websites that generally keep track of this information.

114519: <p>For example, can we see, the latest block, somebody got lucky and solved it in 1 minute, but then the next block, nobody solved it until 18 minutes later? (and how can we see it?)</p>
 5406: <p>You can get an overview of the recent blocks by visiting a &quot;block explorer&quot; such as e.g. <a href="https://blockstream.info" rel="nofollow noreferrer">blockstream.info</a> or <a href="https://blockchair.com/bitcoin/blocks" rel="nofollow noreferrer">blockchair.com</a>. These usually report the timestamps of blocks as seen in the screenshot below. Note that the timestamps in Bitcoin blocks are picked by the block's author and may diverge from the actual time the block was found.</p>
<p><a href="https://i.stack.imgur.com/uDS1r.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/uDS1r.png" alt="A list of the last 10 blocks from blockstream.info" /></a><br />
<sup>via blockstream.info</sup></p>
 208: <p>Blocks have timestamps, but they are not very accurate. The protocol rules only (roughly) require them to not be more than 1 hour in the past and not more than 2 hours in the future. At least historically, miners have used this flexibility, effectively turning part of the timestamp as an additional nonce field. I don't know if this is still common practice.</p>
<p>Still, this means you can't rely on block timestamps to determine when they were actually created. It is possible to run a Bitcoin node yourself, and just observe when your node learns about every block - if you have decent connectivity, it will generally be within seconds of the block being found. There are also block explorer websites that generally keep track of this information.</p>
