How to get Get list of files in master based on merged commit id for any specific date/date range?

[Prabin Singh]

I was able to get the files using REST API endpoint:

rest/api/1.0/projects/{projectKey}/repos/{repsositorySlug}/commits?$merges=only

However it returns list of all merged commits with detailed info. So Two questions here please

Is there a way to get these details for only today or for specific date/date range?
Is there a way to get details of any specific branch like Master?

I can see, the returned JSON has committerTimestamp as:

"committerTimestamp": 1617141725000

But I cannot figure out what format is this with respect to MM DD YYYY