Dan-kun and Hido-kun will perform PCAL activities on specific days on weekdays at X or Y end. So, one of the shift members is expected to accompany him in AM and PM.

 * PCAL works are planned on a specific weekday per month and per XY. [[https://dac.icrr.u-tokyo.ac.jp/KAGRA/DAWG/CAL/O4_CAL_day_week_plan#%5BPcal%5D%20Pcal%20calibration%20during%20O4c | The dates are,]]
  * July 23 and 24
  * Aug 27 and 28
  * Sep 24 and 25
  * Oct 21 and 22
  * Nov 26 and 27

 * The expected one day schedule is as follows,
  * 09:00 Attend the KAGRA morning meeting in front of the KAGRA tunnel
  * 09:30 Enter the mine after obtaining approval during the meeting
  * 12:00 Usually, I continue working without a lunch break to save time.)
  * 15:00 Finish calibration work at the End station
  * 16:00 Complete parameter updates at the Center area or control room