JavaScript Date and Time

// default brower time zone

let d = new Date()

console.log(d)

//User defined date

let d2 = new Date("2025-05-10")

console.log(d2)

//

let d3 = new Date(2025,4)// year month

console.log(d3)

let d4 = new Date(2025,5,21)// year month and day

console.log(d4)

let d5 = new Date(2025,5,21,21,30)// year month and day

let d6 = new Date(1213045)// milli second

console.log(d6) // prints origin date 1970-01-01T00:20:13.045Z

let d = new Date(1000*60*60*24*365*50)

// approx. 50 year from origin date

console.log(d)

DateString and TimeString

d1 = new Date();

console.log(d1)

console.log(d1.toDateString())

console.log(d1.toTimeString())

console.log(d1.toString())

console.log(d1.getDate())

console.log(d1.getDay()) // Date number

console.log(d1.getMonth()) // month number starting from zero

console.log(d1.getFullYear())

console.log(d1.getHours(),d1.getMinutes(),d1.getSeconds(),d1.getMilliseconds())

Some Additional formats

let d4 = new Date();

console.log(d4)

d4.setDate(24)

d4.setMonth(24)

d4.setFullYear(2026)

console.log(d4)

d4.setHours(10)

d4.setMinutes(10)

console.log(d4.toString())

Output

2025-05-27T07:53:21.901Z 2026-01-24T07:53:21.901Z Sat Jan 24 2026 10:10:21 GMT+0530 (India Standard Time)