This question already has an answer here:
- Does the Planck scale imply that spacetime is discrete? 2 answers
- Is time continuous or discrete? 13 answers
Planck time is really a weird topic, if we try to find out that is it time or time interval. It is the time taken by light to travel a Planck LENGTH so it must be time interval. But we also know that Planck length is MOST FUNDAMENTAL and it can't be differentiated anymore. So what's the reality?