Here are some facts relating to time in Ultima Online:

• Time in Britannia passes quickly compared to our Earth time.
• In 2 Earth hours an entire Britannian day will have passed.
• Twelve Britannian days makes one Earth day.
• Just as on Earth, a Britannian year has twelve months.
• Each Britannian month, however, consists of 73 days.
• This makes a Britannian year last 876 Britannian days, which is 73 Earth days.
• One Earth year equals five Britannian years.
• The release date of Ultima Online was in the Britannian year 289.