I used to think this way, then it was pointed out to me that, without timezones, we’d be in a situation where Saturday starts mid-workday in some places.
Assuming you used UTC as the shared time zone, 00:00 on Saturday would start at what is today 4pm in US Pacific Standard Time. So you’d finish work at 01:00 Saturday.
On the other hand, you wouldn’t resume work until 17:00 on Monday.
I used to think this way, then it was pointed out to me that, without timezones, we’d be in a situation where Saturday starts mid-workday in some places.
Assuming you used UTC as the shared time zone, 00:00 on Saturday would start at what is today 4pm in US Pacific Standard Time. So you’d finish work at 01:00 Saturday.
On the other hand, you wouldn’t resume work until 17:00 on Monday.
So you’re not losing any weekend time.