Finding what the current work Shift is and when it started, 4x 12 hour shifts

[zacht]

This may be overkill for what you need, but I'm a big fan of the system that @pturmel shared in this post:

Script for periodically changing shift time

Hi Berkay, I like to solve this kind of problem with a smart database, like PostgreSQL, where I can define a pattern and repeat it with table generating functions. I tweaked one of my implementations to serve as an example: create table shift_schedules (shift_id serial, shift_name varchar(255), refdate date, repeat int, tzname varchar(255), primary key (shift_id)); insert into shift_schedules (shift_name, refdate, repeat, tzname) values ('Berkay Cinar 3wk', '2021-07-26', 21, 'America/Ne…