session-signal Emit a signal at end of desired session (UTC) Install npm install session-signal Use import SessionSignal from 'session-signal' let sessionEmitter = new SessionSignal(['1', '5', '15', '1H']).getEmitter()sessionEmitter.on('newSession', ISR) function ISR(sessions: number[]) { console.log('New session!', new Date(), sessions)} Related market-session Index