Time & Date
- CalendarZone
- www.calendarzone.com
- This Day in History - The History Channel
- www.historychannel.com/today
- TimeandDate.com
- www.timeanddate.com
- US Naval Observatory Master Clock Time Information
- tycho.usno.navy.mil/what.html
- Virtual Perpetual Calendars
- www.vpcalendar.net