moment JS time manipulation

// let now = '2017-10-07 16:00:00'
// // let now = Date.now()
 
// const timed = moment(now).format('dddd, MMMM DD YYYY HH mm ss A')
// const timeStamp = moment(now).valueOf()

// console.log(timed)
// console.log(timeStamp)



	const weekSchedule = {
      "data": {
			"sun":[{
				"start_time": 1506825000000,
				"end_time": 1506828600000,
				"student": {
					"id": 273,
					"full_name": "Flurry Makes",
					"profile_picture": "some://url",
					"type": "student"
				}
			},{
				"start_time": 1506846600000,
				"end_time": 1506853800000,
				"student": {
					"id": 273,
					"full_name": "Flurry Makes",
					"profile_picture": "some://url",
					"type": "student"
				}
			}],
			"mon":[{
				"start_time": 1506918600000,
				"end_time": 1506922200000,
				"student": {
					"id": 273,
					"full_name": "Flurry Makes",
					"profile_picture": "some://url",
					"type": "student"
				}
			},{
				"start_time": 1506947400000,
				"end_time": 1506958200000,
				"student": {
					"id": 273,
					"full_name": "Flurry Makes",
					"profile_picture": "some://url",
					"type": "student"
				}
			}],
			"tue":[{
				"start_time": 1507012200000,
				"end_time": 1507019400000,
				"student": {
					"id": 273,
					"full_name": "Flurry Makes",
					"profile_picture": "some://url",
					"type": "student"
				}
			},
			// {
			// 	"start_time": 8271628716782,
			// 	"end_time": 2873782687263,
			// 	"student": {
			// 		"id": 273,
			// 		"full_name": "Flurry Makes",
			// 		"profile_picture": "some://url",
			// 		"type": "student"
			// 	}
			// }
			],
			"wed":[{
				"start_time": 1507069800000,
				"end_time": 1507077000000,
				"student": {
					"id": 273,
					"full_name": "Flurry Makes",
					"profile_picture": "some://url",
					"type": "student"
				}
			},{
				"start_time": 1507087800000,
				"end_time": 1507091400000,
				"student": {
					"id": 273,
					"full_name": "Flurry Makes",
					"profile_picture": "some://url",
					"type": "student"
				}
			}],
			"thu":[{
				"start_time": 1507195800000,
				"end_time": 1507206600000,
				"student": {
					"id": 273,
					"full_name": "Flurry Makes",
					"profile_picture": "some://url",
					"type": "student"
				}
			},
			// {
			// 	"start_time": 8271628716782,
			// 	"end_time": 2873782687263,
			// 	"student": {
			// 		"id": 273,
			// 		"full_name": "Flurry Makes",
			// 		"profile_picture": "some://url",
			// 		"type": "student"
			// 	}
			// }
			],
			"fri":[{
				"start_time": 1507257000000,
				"end_time": 1507260600000,
				"student": {
					"id": 273,
					"full_name": "Flurry Makes",
					"profile_picture": "some://url",
					"type": "student"
				}
			},			{
				"start_time": 1507296600000,
				"end_time": 1507303800000,
				"student": {
					"id": 273,
					"full_name": "Flurry Makes",
					"profile_picture": "some://url",
					"type": "student"
				}
			}
			],
			"sat":[{
				"start_time": 1507354200000,
				"end_time": 1507357800000,
				"student": {
					"id": 273,
					"full_name": "Flurry Makes",
					"profile_picture": "some://url",
					"type": "student"
				}
			},{
				"start_time": 1507365000000,
				"end_time": 1507372200000,
				"student": {
					"id": 273,
					"full_name": "Flurry Makes",
					"profile_picture": "some://url",
					"type": "student"
				}
			}]
		},
    }



	const getDayStartDayTime = (anyTime) => {
		// let anyTime = Date.now()
		let hrs = moment(anyTime).format('HH')
		let mins = moment(anyTime).format('mm')
		let secs = moment(anyTime).format('ss')
	
		let subHrs = parseInt(hrs)
		// console.log(subHrs)
	
		let subMins = parseInt(mins)
		// console.log(subMins)
	
		let subSecs = parseInt(secs)
		// console.log(secs)
	
		let startDayTimeStamp = moment(anyTime)
								   .add(-subHrs,'hours')
								   .add(-subMins,'minutes')
								   .add(-secs,'seconds')
								   .valueOf()
		return startDayTimeStamp
	}
	

	const getParticularDayData = (dayFullSchedule) => {
// 		console.log(dayFullSchedule)
		const startTime = getDayStartDayTime(dayFullSchedule[0].start_time)
		if(!dayFullSchedule[0].start_time){
			return { morningData:[], afternoonData:[], eveningData:[]  }
		}
		const timestamp8AM = moment(startTime).add(8,'hours').valueOf()
		const timestamp4PM = moment(timestamp8AM).add(8,'hours').valueOf()
		const timestamp12AM = moment(timestamp4PM).add(8,'hours').valueOf()

		const morningData = dayFullSchedule.filter(time => time.end_time >= startTime && time.end_time < timestamp8AM )
		const afternoonData = dayFullSchedule.filter(time => time.end_time >= timestamp8AM && time.end_time < timestamp4PM )
		const eveningData = dayFullSchedule.filter(time => time.end_time >= timestamp4PM && time.end_time < timestamp12AM )

		return { morningData:morningData, afternoonData:afternoonData, eveningData:eveningData }
	}

	const sortSchedule = (weekSchedule) => {

		const sunData = getParticularDayData(weekSchedule.data.sun)
		const monData = getParticularDayData(weekSchedule.data.mon)
		const tueData = getParticularDayData(weekSchedule.data.tue)
		const wedData = getParticularDayData(weekSchedule.data.wed)
		const thursData = getParticularDayData(weekSchedule.data.thu)
		const friData = getParticularDayData(weekSchedule.data.fri)
		const satData = getParticularDayData(weekSchedule.data.sat)
		
		return { sunData,monData,tueData,wedData,thursData,friData,satData }
	}
    
    const organizedData = sortSchedule(weekSchedule)
//     console.log(organizedData)
    
    const allMornings = Object.values(organizedData).reduce((allMorningsData,day)=>{
      return [...allMorningsData, ...day.morningData]
    },[])
//     console.log(allMornings)
    
    const allAfternoons = Object.values(organizedData).reduce((allNoonsData,day)=>{
      return [...allNoonsData, ...day.afternoonData]
    },[])
//     console.log(allAfternoons)
    
    const allEvenings = Object.values(organizedData).reduce((allEveningsData,day)=>{
      return [...allEveningsData, ...day.eveningData]
    },[])
//     console.log(allEvenings)
    

    const printSchedule = (sessions) => {
       sessions.forEach(session => {
      const start = moment(session.start_time).format('dddd, MMMM DD YYYY HH mm ss A')
      const end = moment(session.end_time).format('dddd, MMMM DD YYYY HH mm ss A')
      
      console.log(start)
      console.log(end)
      console.log('--------------')
    })
    }
    
    
console.log('----------MORNINGS-------------')    
    printSchedule(allMornings)
    
console.log('----------NOONS---------------')
    printSchedule(allAfternoons)

console.log('--------EVENINGS---------------')

  printSchedule(allEvenings)