| June 2019 | Bulletin publication 2 | |
| March 2020 | Bulletin publication 3 | |
| 13 – 17 April 2020 | The Third official JWOC2020 training camp | |
| 26 April 2020 | The deadline for preliminary entries. | |
| 19-23 June 2020 | 4th official training camp | |
| 25 June 2020 | Bulletin publication 4 | |
| 26 June 2020 | Arrival, Registration | |
| 26 June-01 July |
09:00-11:00 27th June |
Model Event (Middle-Long-Relay)
|
| 27 June 2020 | 14:00-16:00 | Model Event (Sprint) |
| 17:00-18:30 | Opening Ceremony | |
| 28 June 2020 | 09:00-12:45 | JWOC Sprint and Medal Ceremony |
| 29 June 2020 | 10:00-12:30 | JWOC Middle Qualification |
| 30 June 2020 | 09:00-13:00 | JWOC Middle Finals |
| Medal Ceremony Middle | ||
| 01 July 2020 | Rest Day | |
| 02 July 2020 | 09:00-16:00 | JWOC Long |
| Medal Ceremony Long | ||
| 03 July 2020 | 10:00-13:30 | JWOC Relays |
| 13:30-14:30 | Medal Ceremony relay and Closing Ceremony | |
| 04 July 2020 | Departure home | |
| 13 – 21 October 2019 | The Second official JWOC2020 training camp |