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Editorial Team
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Asked: 2026-05-27T00:29:00+00:00

My program accepts date in the format of yyyymmdd, I don’t know how to

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My program accepts date in the format of “yyyymmdd”, I don’t know how to check if it’s a weekday or not. I’ve seen ppl using $(date +%u) -gt 5 or "$(date +%a)" in Sat|Sun echo "weekend" in other threads, but that ${date} is like Tue Nov 22 14:16:35 EST 2011 I guess. So is there a good way to convert “yyyymmdd” to ${date} format? Or is there a simple way to check if “yyyymmdd” is a weekday or not? Any language is fine. Thanks.

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  1. Editorial Team

    Any language? In Java I’d use SimpleDateFormat or Joda Time’s DateTimeFormatter. In C# I’d either use DateTime.ParseExact or Noda Time‘s LocalDatePattern. In all of these cases, the result is a value which can be asked for things like the day of the week.

    In Python I suspect you want datetime.strptime, e.g.

    date = datetime.strptime(text, "%Y%m%d")
day = date.weekday()

if day < 5 # Monday(0) to Friday(4)
    # Do something here

    This is completely untested, however…

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