Add to calendar flat color icons with quadrant frames - Stock vector

add, new, insert, enroll, plus, calendar, reminder, event, meeting, appointment, booking, planning, date, year, month, day, week, time, notes, notepad, pages, paper, icons, buttons, symbols, pictograms, pictograph, design, flat, plain, simple, vector, frames, outlines, square, quadratic, quadrangular, quadrant, multicolors, multicolored, varicoloured, varicolored, colors, green, purple, red, yellow, blue, brown, gray