UTC
UTC adds .utc .local .isUTC APIs to parse or display in UTC.
var utc = require('dayjs/plugin/utc')
dayjs.extend(utc)
// default local time
dayjs().format() //2019-03-06T17:11:55+08:00
// UTC mode
dayjs.utc().format() // 2019-03-06T09:11:55Z
// convert local time to UTC time
dayjs().utc().format() // 2019-03-06T09:11:55Z
// While in UTC mode, all display methods will display in UTC time instead of local time.
// And all getters and setters will internally use the Date#getUTC* and Date#setUTC* methods instead of the Date#get* and Date#set* methods.
dayjs.utc().isUTC() // true
dayjs.utc().local().format() //2019-03-06T17:11:55+08:00
dayjs.utc('2018-01-01', 'YYYY-MM-DD') // with CustomParseFormat plugin
By default, Day.js parses and displays in local time.
If you want to parse or display in UTC, you can use dayjs.utc() instead of dayjs().
dayjs.utc dayjs.utc(dateType?: string | number | Date | Dayjs, format? string)
Returns a Dayjs object in UTC mode.
Use UTC time .utc()
Returns a cloned Dayjs object with a flag to use UTC time.
Use local time .local()
Returns a cloned Dayjs object with a flag to use local time.
Set UTC offset .utcOffset()
Returns a cloned Dayjs object with a new UTC offset.
isUTC mode .isUTC()
Returns a boolean indicating current Dayjs object is in UTC mode or not.