You can schedule a cloud code script to run at a specific target time (as shown in the example below, which will execute at 23:59 every day), instead of adding a certain amount of time to the script's execution time.

"use strict";

function main() {
    var response = {}

    bridge.logDebugJson("Script Inputs", data)

    const scriptName = data.scriptName
    const interval = data.args.interval
    const searchSpan = interval < 60 ? 60 : 60 * 24

    // schedule checking and re-schedule itself for the next week at 23:59 on the same day
    var scriptProxy = bridge.getScriptServiceProxy()

    var dateTimeSpanMinsFromNowInMillis = new Date().getTime() + (searchSpan * 60 * 1000)
    var result = scriptProxy.getScheduledCloudScripts(dateTimeSpanMinsFromNowInMillis)

    var nowTime = new Date().getTime()

    if ((result.status == 200) && (result.data !== null)) {
        for (var i = 0; i < result.data.scheduledJobs.length; i++) {
            if (result.data.scheduledJobs[i].scriptName === scriptName && result.data.scheduledJobs[i].scheduledStartTime > nowTime) {
                scriptProxy.cancelScheduledScript(result.data.scheduledJobs[i].jobId)
            }
        }
    }

    const targetHour = 23
    const targetMinute = 59
    const minutesDifference = getMinutesDifference(targetHour, targetMinute)
    let minutesFromNow = minutesDifference + interval
    bridge.logInfo(`minutesFromNow between the script calling time and the time of 23:59 on a same day${minutesFromNow}`)
    response.scheduleJob = scriptProxy.scheduleRunScriptMinutes(scriptName, data, minutesFromNow)

    // the code for your script 

    return response
}

function getMinutesDifference(targetHour, targetMinute) {
    const now = new Date()
    const targetTime = new Date(now.getFullYear(), now.getMonth(), now.getDate(), targetHour, targetMinute)
    const differenceInMilliseconds = targetTime - now
    bridge.logInfo(`differenceInMilliseconds between the script calling time and the target time: ${differenceInMilliseconds}`)
    const differenceInMinutes = Math.floor(differenceInMilliseconds / (1000 * 60))
    return differenceInMinutes
}

main()

The parameters for this script will be 1440 minutes,

{
  "scriptName": "thisScriptNameItself",
  "args": {
    "interval": 1440
  }
}

JasonL