？水工研同窓会 Published on 27th February 202428th February 2024 by yasuda-t Calendar Add to Calendar Add to Timely Calendar Add to Google Add to Outlook Add to Apple Calendar Add to other calendar Export to XML When: 27th April 2024 all-day Asia/Tokyo Timezone 2024-04-27T00:00:00+09:00 2024-04-28T00:00:00+09:00