1 day = 24 hours so every 4 hours means 24/4 = 6 per day. 90 @ 6 per day equals 90/6 = 15 days.
In Sweden (with very rigorous worker protection legislation) you do not have to get a 15 minute break if your shift is 4 hours long (but you are allowed 5 minutes each hour).
158 years, 178 days, 8 hours, 53 minutes and 20 seconds (assuming 22 leap years).
Nothing wrong with that - so long as you are happy !
It moves 360 degrees every 12 hours, so for 90 degrees that is 3 hours
Every 2 or 3 hours, and when you take a break.
It is recommended to stop and take a break every 2 hours when driving long distances to avoid fatigue and maintain alertness. Taking a break allows you to stretch, rest, and refocus, reducing the risk of accidents on the road.
At least 8 hours every single day.
3 Hours Every Day
Per four hours worked, break times usually last between five and twenty minutes
3-5 hours every day.
Keep yourself interested in whatever you are studying. Take a break every 1 and a half hours for 30 minutes to exercise, get a snack and bathroom break. The break will help you concentrate after when you resume your studying.
at least 8 hours sleep every night
Change it every 2-3 hours , every hour if the flow is heavy
that's legal. at my job you get a break every 4 hours
I would give it a break every 2-3 hours for 15 minuets in the heat of 70 degrees and above, or every 5 hours in the cold for about 15 minuets. Temperatures below 30 degrees doesn't need any breaks but you should take one to check your fluids and top off.
about every four hours or two hundred miles