How did the person who invented the calendar know what day it was

What detail is explicit from this paragraph?

Which style of polyphony uses a borrowed chant and arranges several new melodies and texts above and unrelated to the chant?

Consider this program meant to increase access to (and interest in) the arts among those in brazil who lack the financial resources to explore them on their own. discuss with your team: is this a plan you could support, or would you rather see these funds invested in other ways?