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.TH newtime
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.SH NAME 
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.B newtime - 
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get a new date string from an initial date and an offset in hours
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.SH SYNOPSIS 
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.B newtime 
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.I date 
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.I offset
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.SH DESCRIPTION
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Given an initial date string in format "YYYYMMDD_HH" and an offset in hours, create a new date string - agin in the form "YYYYMMDD_HH".
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.SH PARAMETERS
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.TP 15
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.I date
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initial date in form "YYYYMMDD_HH", e.g. 20110102_18 for 18 UTC, 2nd January 2011.
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.TP 15
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.I offset
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Offset in hours; the offset can be positive (into the future) or negative (into the past).
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.SH EXAMPLES
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.TP 5
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.B [1] newtime 20110101_00 45
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gives 20110102_21, the datestring 45 h after 20110101_00.
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.SH AUTHOR
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Written by Michael Sprenger and Heini Wernli (January 2011)
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