date out of year boundaries! year upper boundary reached! year lower boundary reached! previous year [STRG+LEFT] previous month [LEFT] next month [RIGHT] next year [STRG+RIGHT] reset chosen date close weeknumber WiY weekday ... selected day weekend bridge move today Y-m-d ^([0-9][0-9][0-9][0-9])-([0][1-9]|[1][0-2])-([0-2][0-9]|[3][0-1])$ 2 1 0