I am trying to automate generation of a report based on an insight query, every Monday for the past week. I need to run an insight query every Monday as a cron job. Could someone guide me on how I could automate setting the end time and start time to be last week's Friday 12:00 am and end time to be last Thursday 11:59pm.

const insightsQuery = {
        endTime: moment().unix(),
        startTime: moment().subtract(7, 'days').unix(),
        queryString: myQueryString
        logGroupNames: ['/aws/lambda/MyLab']
    };

return logsClient.startQuery(insightsQuery).promise()
        .then(({ queryId }) => { 
do something
}

Th F Sa Su M Tu W Th F Sa Su Mo 
   <---------------->        |
                             |
                            Cron job is ran every week on Monday to generate a report for the last week