next.js/examples/with-react-intl/pages/about.js

import React, { Component } from 'react'
import { FormattedRelative } from 'react-intl'
import Layout from '../components/Layout'

class About extends Component {
  static async getInitialProps ({ req }) {
    return { someDate: Date.now() }
  }

  render () {
    return (
      <Layout>
        <p>
          <FormattedRelative
            value={this.props.someDate}
            updateInterval={1000}
          />
        </p>
      </Layout>
    )
  }
}

export default About