Also note that 1 month in days is 30.4368499. There simply isn't a good way to convert between labels for specific periods of time and units for measuring the

Also note that 1 month in days is 30.4368499. There simply isn't a good way to convert between labels for specific periods of time and units for measuring the passing of time. The problem is that language and common usage don't make much of a distinction between the two. If you ask people how long a day is, they'll tell you 24 hours. Even Google will tell you that, but it isn't true. A day is usually 24 hours. DST and leap seconds can both change the length of a day though. So a day isn't a unit for measuring time at all. It's a name for a certain period of time. Leap seconds can even mess with terms that seem bulletproof like "hour" or "minute". When there's a leap second, one minute of the year becomes 61 seconds, and the corresponding hour becomes 3601 seconds. The only unit of time you can reliably work with is the second (and metric derivations thereof, like millisecond).