MCP Time Server Node

#!/usr/bin/env node const { toDate, formatInTimeZone, toZonedTime } = require('date-fns-tz'); const { setHours, setMinutes, format, eachDayOfInterval } = require('date-fns'); console.log('=== Debug Timezone Business Hours Issue ===\n'); // Parse times as Tokyo time const startStr = '2025-01-21T10:00:00'; const endStr = '2025-01-21T14:00:00'; const timezone = 'Asia/Tokyo'; const startDate = toDate(startStr, { timeZone: timezone }); const endDate = toDate(endStr, { timeZone: timezone }); console.log('Start (Tokyo):', startStr); console.log('End (Tokyo):', endStr); console.log('Start (UTC):', startDate.toISOString()); console.log('End (UTC):', endDate.toISOString()); // Get days in interval const days = eachDayOfInterval({ start: startDate, end: endDate }); console.log('\nDays in interval:', days.length); days.forEach((day, i) => { console.log(`\nDay ${i + 1}:`, format(day, 'yyyy-MM-dd EEEE')); console.log(' Day in system TZ:', day.toString()); // Set business hours in system timezone const businessStart = setMinutes(setHours(day, 9), 0); const businessEnd = setMinutes(setHours(day, 17), 0); console.log(' Business start (system TZ):', businessStart.toString()); console.log(' Business end (system TZ):', businessEnd.toString()); // The problem: our start/end dates are in UTC, but business hours are in system TZ console.log(' Start date for comparison:', startDate.toString()); console.log( ' Start is within business hours?', startDate >= businessStart && startDate <= businessEnd, ); }); console.log('\n=== The Fix ==='); console.log('Business hours should be calculated in the business timezone context.'); console.log( 'We need to convert business hours to UTC for comparison, or work entirely in the business timezone.', ); console.log('\n=== Done ===');