Reddit user harpalss animated hours of day light by latitude and day of year. Just let it hypnotize you. They used this formula to calculate daylight hours.
Hours of daylight mapped as a function of latitude and time of year
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What to Call Your Distant Relative
When you have a big family, it’s a challenge to figure out how everyone is related. So here are some charts to help you figure it out.
Sleep Schedule, From the Inconsistent Teenage Years to Retirement
From the teenage years to college to adulthood through retirement, sleep is all over the place at first but then converges towards consistency.
Looking at educational attainment, income, work hours, and commute, this is who has the same work life as you do.