The Gregorian, or modern, calendar, presents its calendar year to be either a common year of 365 days or a leap year of 366 days, as do the Julian calendars; see below.
A year is the orbital period of the Earth moving in its orbit around the Sun.
Some volcanic events which were sufficiently powerful to have distributed material around the globe leave a signature in the ice which can be detected in many different cores, allowing synchronization of the time scales between two different locations.
Here’s what’s happened in the past year — two girlfriends have gotten engaged, and one has her condo on the market and is looking with her boyfriend to buy a new place and move in together. So, because of that and the fact that we live longer, she says, it’s worth putting the time and energy into looking for love regardless of your age.
After all, you didn’t exactly grow up at the same time.
An ice core is a core sample that is typically removed from an ice sheet, most commonly from the polar ice caps of Antarctica or Greenland or from high mountain glaciers elsewhere.