roma13, что-то Вы много написали
function clock() {
var time = new Date(),
hour = time.getHours(),
minutes = time.getMinutes(),
seconds = time.getSeconds();
$('#hour').text(hour);
$('#seconds').text(seconds < 10 ? '0' + seconds : seconds);
$('#minutes').text(minutes < 10 ? '0' + minutes : minutes);
}
function calendar(){
var time = new Date(),
arrmonth = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'],
arrday = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'],
month = time.getMonth();
$('#month2').text(arrmonth[month]);
$('#day').text(arrday[time.getDay()]);
$('#date').text(time.getDate());
$('#month').text(month + 1);
}