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.TH CAL 1
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.SH NAME
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cal \- print calendar
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.SH SYNOPSIS
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.B cal
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[
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.I month
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]
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[
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.I year
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]
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.SH DESCRIPTION
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.I Cal
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prints a calendar.
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.I Month
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is either a number from 1 to 12,
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a lower case month name,
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or a lower case three-letter prefix of a month name.
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.I Year
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can be between 1
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and 9999.
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If either
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.I month
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or
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.I year
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is omitted, the current month or year is used.
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If only one argument is given, and it is a number larger than 12,
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a calendar for all twelve months of the given year is produced;
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otherwise a calendar for just one month is printed.
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The calendar
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produced is that for England and her colonies.
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.PP
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Try
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.EX
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	cal sep 1752
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.EE
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.SH SOURCE
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.B /sys/src/cmd/cal.c
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.SH BUGS
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The year is always considered to start in January even though this
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is historically naive.
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.PP
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Beware that
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.L "cal 90"
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refers to the early Christian era,
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not the 20th century.