YEAR CODE
Calendar Calculation Trainer · Doomsday Mastery
Drill — Flash cards for memorizing the 2-digit year codes (0–6). The trainer learns which years trip you up and quizzes you on them more.
Speed Test — 60 seconds, answer as many year codes as you can. Tracks your personal best.
Date Calc — Full date calculation practice. Given a random date, name the day of the week. Choose any century or drill the current year only.
Reference — Look up year code groups and a pre-calculated combined code table for 1996–2056.
What is the code for this year?
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60SEC
What is the code for this year?
Press Start
Score: 0
Century Range
What day of the week is this date?
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Year Code Groups (2-digit → code 0–6)
Combined Code: 1996–2056
Century code + Year code combined. Add your month code + day number, then mod 7 for the day of the week. ★ = current year
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