RR Lyrae stars.
(Sometimes these stars are classed as a type of "Cepheid variable", but they are usually considered as a separate star type.)
At some point there is a balance between the daylight hours and nighttime hours but I do not know the exact date or time period.
A regulation hockey game consists of 3 periods that last 20 minutes each and 15 minute intermissions between periods. Each period with stoppages can go for about an average of 30-35 minutes. Therefore a hockey game will typically last about an hour and a half to two hours.
The time difference between New Zealand and England (UK) varies between 11 and 13 hours throughout the year. Generally, when New Zealand is on Daylight Savings Time the time difference is 13 hours and when the UK is on Daylight Savings Time the time difference is 11 hours. The difference is 12 hours in the cross-over periods (when both observe DST at the same time which is approx. 2 months a year). The best way to check is via a time difference calculator. UK is at UT = 0. New Zealand is UT + 12 hours, apart from the Chatham Islands which are UT + 12.45. And of course, civil time in both countries use Summer Time a.k.a. Daylight Saving Time as appropriate.
The difference in time between 8AM and 4.20PM is eight hours 20 minutes.
South Africa and Italy are on the same time line so there is no difference in hours between the two.
hours is a dependent variable as it depends on seconds and minutes for it to occur
I have variable hours of work; today I will leave early.
At some point there is a balance between the daylight hours and nighttime hours but I do not know the exact date or time period.
hours spent studying
8 hours, 480minutes, 28800 seconds 8 hours is the time taken for 264,747,794,976,000 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom.
8
There are 24 hours in a day and 3 20-minute periods in each hour.(24 hours/day) x (3 20-minute periods/hour) = 7220-minute periods/day
The following is a hypothesis: "The number of eggs a chicken lays is affected by the hours of daylight." In this hypothesis, the independent variable is the hours of daylight.
There are 240, 30 second periods in 2 hours.
Labor. Fixed rate for hours planned; variable rates for unscheduled overtime.
Independent variable is time; dependent variable is temperature.
Variable, depending on the owner.