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Monday

is a day of the week.

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Monday

Monday

is a day of the week.

Examples

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Basic Examples  (2)

Monday can be returned by functions like DayName:

Wolfram Language code: DayName[{2022, 1, 31}]

Use DayPlus to find the date of next Monday:

Wolfram Language code: DayPlus[Today, 1, Monday]

Applications  (1)

This time series contains the number of steps taken daily by a person during a period of five months:

Wolfram Language code: stepdata = TemporalData[TimeSeries, {{{10785, 11753, 7092, 5290, 5022, 7438, 13386, 11195, 12499, 12495, 12004, 11833, 4097, 14270, 10280, 11947, 12699, 15634, 12332, 8399, 4680, 10034, 9173, 5309, 9552, 5605, 13294, 7600, 2417, 0, 1315, 9066, 11624 ... 1, 9618, 21243, 22273, 15869, 17687, 9263, 21162, 14724, 6386}}, {TemporalData`DateSpecification[{2013, 4, 1, 0, 0, 0.}, {2013, 9, 1, 0, 0, 0.}, {1, "Day"}]}, 1, {"Discrete", 1}, {"Discrete", 1}, 1, {ValueDimensions -> 1}}, True, 10.];

Analyze the number of steps depending on a day of the week:

Wolfram Language code: days = {Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday};

Select the values for each day of the week:

Wolfram Language code: wk = Map[TimeSeriesResample[stepdata, #]&, days];

Compute the mean number of steps for each day of the week:

Wolfram Language code: avg = Map[Floor[Mean[#]]&, wk];

Visualize the mean steps per day:

Wolfram Language code: BarChart[avg, ChartStyle -> "DarkRainbow", LabelingFunction -> (Placed[#, Below]&), ChartLabels -> {avg, Placed[days, Center, Style[Rotate[#, Pi / 2], 16, Bold, Opacity[1]]&]}]
Wolfram Research (2012), Monday, Wolfram Language function, https://reference.wolfram.com/language/ref/Monday.html.

Text

Wolfram Research (2012), Monday, Wolfram Language function, https://reference.wolfram.com/language/ref/Monday.html.

CMS

Wolfram Language. 2012. "Monday." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/Monday.html.

APA

Wolfram Language. (2012). Monday. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/Monday.html

BibTeX

@misc{reference.wolfram_2026_monday, author="Wolfram Research", title="{Monday}", year="2012", howpublished="\url{https://reference.wolfram.com/language/ref/Monday.html}", note=[Accessed: 13-June-2026]}

BibLaTeX

@online{reference.wolfram_2026_monday, organization={Wolfram Research}, title={Monday}, year={2012}, url={https://reference.wolfram.com/language/ref/Monday.html}, note=[Accessed: 13-June-2026]}