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<div class="title">Date and time calculations</div> </div>
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Modules</h2></td></tr>
<tr class="memitem:group__calendars"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__calendars.html">Calendars</a></td></tr>
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Classes</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_date_interval.html">DateInterval</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight"><a class="el" href="class_quant_lib_1_1_date.html" title="Concrete date class.">Date</a> interval described by a number of a given time unit. <a href="class_quant_lib_1_1_date_interval.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_pricing_period.html">PricingPeriod</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Time pricingperiod described by a number of a given time unit. <a href="class_quant_lib_1_1_pricing_period.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_calendar.html">Calendar</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">calendar class <a href="class_quant_lib_1_1_calendar.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_date.html">Date</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Concrete date class. <a href="class_quant_lib_1_1_date.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="struct_quant_lib_1_1_date_generation.html">DateGeneration</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Date-generation rule. <a href="struct_quant_lib_1_1_date_generation.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_day_counter.html">DayCounter</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">day counter class <a href="class_quant_lib_1_1_day_counter.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_period.html">Period</a></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_schedule.html">Schedule</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Payment schedule. <a href="class_quant_lib_1_1_schedule.html#details">More...</a><br /></td></tr>
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Typedefs</h2></td></tr>
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typedef <a class="el" href="group__types.html#gab9c87440c314438e51a899a03d2442d0">Integer</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__datetime.html#ga91214837fb837828e91ce17de9eaa43c">Day</a></td></tr>
<tr class="memdesc:ga91214837fb837828e91ce17de9eaa43c"><td class="mdescLeft"> </td><td class="mdescRight">Day number. <br /></td></tr>
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typedef <a class="el" href="group__types.html#gab9c87440c314438e51a899a03d2442d0">Integer</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__datetime.html#ga84dee895910074cbc7d936c86c1abf3d">Year</a></td></tr>
<tr class="memdesc:ga84dee895910074cbc7d936c86c1abf3d"><td class="mdescLeft"> </td><td class="mdescRight">Year number. <br /></td></tr>
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Enumerations</h2></td></tr>
<tr class="memitem:gaff46c5ae9385d20709bedade86edd368"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__datetime.html#gaff46c5ae9385d20709bedade86edd368">BusinessDayConvention</a> { <br />
  <a class="el" href="group__datetime.html#ggaff46c5ae9385d20709bedade86edd368ab6a37af780aa2b97f8bbdc4d149dae18">Following</a>,
<a class="el" href="group__datetime.html#ggaff46c5ae9385d20709bedade86edd368a013e092c359f6031cc0563fd413ce707">ModifiedFollowing</a>,
<a class="el" href="group__datetime.html#ggaff46c5ae9385d20709bedade86edd368ad5fb7521157d4d4a91012209d6c75847">Preceding</a>,
<a class="el" href="group__datetime.html#ggaff46c5ae9385d20709bedade86edd368aab4d046fac23bf67214cb5f3cf8387ee">ModifiedPreceding</a>,
<br />
  <a class="el" href="group__datetime.html#ggaff46c5ae9385d20709bedade86edd368a5fb8b90b7fdf1a3a228fbbc083e64547">Unadjusted</a>,
<a class="el" href="group__datetime.html#ggaff46c5ae9385d20709bedade86edd368a2d22494a2c58eea6ad08d3d8b6a14a7d">HalfMonthModifiedFollowing</a>,
<a class="el" href="group__datetime.html#ggaff46c5ae9385d20709bedade86edd368a02bcbe686019f8ce26f3a1b282a8f2d1">Nearest</a>
<br />
}</td></tr>
<tr class="memdesc:gaff46c5ae9385d20709bedade86edd368"><td class="mdescLeft"> </td><td class="mdescRight">Business Day conventions. <a href="group__datetime.html#gaff46c5ae9385d20709bedade86edd368">More...</a><br /></td></tr>
<tr class="separator:gaff46c5ae9385d20709bedade86edd368"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gae34b763987dcf60c6c619d327b8c9dbb"><td class="memItemLeft" align="right" valign="top"><a id="gae34b763987dcf60c6c619d327b8c9dbb"></a>enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__datetime.html#gae34b763987dcf60c6c619d327b8c9dbb">Month</a> { <br />
  <b>January</b> = 1,
<b>February</b> = 2,
<b>March</b> = 3,
<b>April</b> = 4,
<br />
  <b>May</b> = 5,
<b>June</b> = 6,
<b>July</b> = 7,
<b>August</b> = 8,
<br />
  <b>September</b> = 9,
<b>October</b> = 10,
<b>November</b> = 11,
<b>December</b> = 12,
<br />
  <b>Jan</b> = 1,
<b>Feb</b> = 2,
<b>Mar</b> = 3,
<b>Apr</b> = 4,
<br />
  <b>Jun</b> = 6,
<b>Jul</b> = 7,
<b>Aug</b> = 8,
<b>Sep</b> = 9,
<br />
  <b>Oct</b> = 10,
<b>Nov</b> = 11,
<b>Dec</b> = 12
<br />
}</td></tr>
<tr class="memdesc:gae34b763987dcf60c6c619d327b8c9dbb"><td class="mdescLeft"> </td><td class="mdescRight">Month names. <br /></td></tr>
<tr class="separator:gae34b763987dcf60c6c619d327b8c9dbb"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga6d41db8ba0ea90d22df35889df452ada"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__datetime.html#ga6d41db8ba0ea90d22df35889df452ada">Frequency</a> { <br />
  <a class="el" href="group__datetime.html#gga6d41db8ba0ea90d22df35889df452adaad7764a2ea2518891555bd395faffb4da">NoFrequency</a> = -1,
<a class="el" href="group__datetime.html#gga6d41db8ba0ea90d22df35889df452adaa96be73c339468e5d0d9aed7ccc384bcc">Once</a> = 0,
<a class="el" href="group__datetime.html#gga6d41db8ba0ea90d22df35889df452adaa508b18014c96e2d466c12b39d7f4e426">Annual</a> = 1,
<a class="el" href="group__datetime.html#gga6d41db8ba0ea90d22df35889df452adaad1a5868a1c314bb7f6ab68e2fa182b2d">Semiannual</a> = 2,
<br />
  <a class="el" href="group__datetime.html#gga6d41db8ba0ea90d22df35889df452adaacb332c66d96dd68b145f78c14a704f5c">EveryFourthMonth</a> = 3,
<a class="el" href="group__datetime.html#gga6d41db8ba0ea90d22df35889df452adaab4fce358383d1822f7596659e00b07f7">Quarterly</a> = 4,
<a class="el" href="group__datetime.html#gga6d41db8ba0ea90d22df35889df452adaa91a5f14e7e96afbf6429a2549d6896e8">Bimonthly</a> = 6,
<a class="el" href="group__datetime.html#gga6d41db8ba0ea90d22df35889df452adaa075d775ff1bb75474c994bd94e9629f4">Monthly</a> = 12,
<br />
  <a class="el" href="group__datetime.html#gga6d41db8ba0ea90d22df35889df452adaa314730e6ae42badf810bc4ab9f3f376b">EveryFourthWeek</a> = 13,
<a class="el" href="group__datetime.html#gga6d41db8ba0ea90d22df35889df452adaa1b3b68c6c6974a8e343ea8d8b66c107f">Biweekly</a> = 26,
<a class="el" href="group__datetime.html#gga6d41db8ba0ea90d22df35889df452adaa39017ed07c435bd4b739cda6bf3e5a35">Weekly</a> = 52,
<a class="el" href="group__datetime.html#gga6d41db8ba0ea90d22df35889df452adaa6b15f8b55b10fefe6300b2f3bf60ad78">Daily</a> = 365,
<br />
  <a class="el" href="group__datetime.html#gga6d41db8ba0ea90d22df35889df452adaa3a3a2404bef8994b2dd567620f839ed7">OtherFrequency</a> = 999
<br />
}</td></tr>
<tr class="memdesc:ga6d41db8ba0ea90d22df35889df452ada"><td class="mdescLeft"> </td><td class="mdescRight">Frequency of events. <a href="group__datetime.html#ga6d41db8ba0ea90d22df35889df452ada">More...</a><br /></td></tr>
<tr class="separator:ga6d41db8ba0ea90d22df35889df452ada"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gadd9fe45e09605eee3e4a39c8a5c4476d"><td class="memItemLeft" align="right" valign="top"><a id="gadd9fe45e09605eee3e4a39c8a5c4476d"></a>enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__datetime.html#gadd9fe45e09605eee3e4a39c8a5c4476d">TimeUnit</a> { <br />
  <b>Days</b>,
<b>Weeks</b>,
<b>Months</b>,
<b>Years</b>,
<br />
  <b>Hours</b>,
<b>Minutes</b>,
<b>Seconds</b>,
<b>Milliseconds</b>,
<br />
  <b>Microseconds</b>
<br />
}</td></tr>
<tr class="memdesc:gadd9fe45e09605eee3e4a39c8a5c4476d"><td class="mdescLeft"> </td><td class="mdescRight">Units used to describe time periods. <br /></td></tr>
<tr class="separator:gadd9fe45e09605eee3e4a39c8a5c4476d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaec3d5ec6653b2c392d449500b8f5cb3a"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__datetime.html#gaec3d5ec6653b2c392d449500b8f5cb3a">Weekday</a> { <br />
  <b>Sunday</b> = 1,
<b>Monday</b> = 2,
<b>Tuesday</b> = 3,
<b>Wednesday</b> = 4,
<br />
  <b>Thursday</b> = 5,
<b>Friday</b> = 6,
<b>Saturday</b> = 7,
<b>Sun</b> = 1,
<br />
  <b>Mon</b> = 2,
<b>Tue</b> = 3,
<b>Wed</b> = 4,
<b>Thu</b> = 5,
<br />
  <b>Fri</b> = 6,
<b>Sat</b> = 7
<br />
}</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<p>The concrete class <code><a class="el" href="class_quant_lib_1_1_date.html" title="Concrete date class.">QuantLib::Date</a></code> implements the concept of date. Its functionalities include:</p>
<ul>
<li>providing basic information such as weekday, day of the month, day of the year, month, and year;</li>
<li>comparing two dates to determine whether they are equal, or which one is the earlier or later, or the difference between them expressed in days;</li>
<li>incrementing or decrementing a date of a given number of days, or of a given period expressed in weeks, months, or years. </li>
</ul>
<h2 class="groupheader">Enumeration Type Documentation</h2>
<a id="gaff46c5ae9385d20709bedade86edd368"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gaff46c5ae9385d20709bedade86edd368">◆ </a></span>BusinessDayConvention</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">enum <a class="el" href="group__datetime.html#gaff46c5ae9385d20709bedade86edd368">BusinessDayConvention</a></td>
</tr>
</table>
</div><div class="memdoc">
<p>Business Day conventions. </p>
<p>These conventions specify the algorithm used to adjust a date in case it is not a valid business day. </p>
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="ggaff46c5ae9385d20709bedade86edd368ab6a37af780aa2b97f8bbdc4d149dae18"></a>Following </td><td class="fielddoc"><p>Choose the first business day after the given holiday. </p>
</td></tr>
<tr><td class="fieldname"><a id="ggaff46c5ae9385d20709bedade86edd368a013e092c359f6031cc0563fd413ce707"></a>ModifiedFollowing </td><td class="fielddoc"><p>Choose the first business day after the given holiday unless it belongs to a different month, in which case choose the first business day before the holiday. </p>
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<tr><td class="fieldname"><a id="ggaff46c5ae9385d20709bedade86edd368ad5fb7521157d4d4a91012209d6c75847"></a>Preceding </td><td class="fielddoc"><p>Choose the first business day before the given holiday. </p>
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<tr><td class="fieldname"><a id="ggaff46c5ae9385d20709bedade86edd368aab4d046fac23bf67214cb5f3cf8387ee"></a>ModifiedPreceding </td><td class="fielddoc"><p>Choose the first business day before the given holiday unless it belongs to a different month, in which case choose the first business day after the holiday. </p>
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<tr><td class="fieldname"><a id="ggaff46c5ae9385d20709bedade86edd368a5fb8b90b7fdf1a3a228fbbc083e64547"></a>Unadjusted </td><td class="fielddoc"><p>Do not adjust. </p>
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<tr><td class="fieldname"><a id="ggaff46c5ae9385d20709bedade86edd368a2d22494a2c58eea6ad08d3d8b6a14a7d"></a>HalfMonthModifiedFollowing </td><td class="fielddoc"><p>Choose the first business day after the given holiday unless that day crosses the mid-month (15th) or the end of month, in which case choose the first business day before the holiday. </p>
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<tr><td class="fieldname"><a id="ggaff46c5ae9385d20709bedade86edd368a02bcbe686019f8ce26f3a1b282a8f2d1"></a>Nearest </td><td class="fielddoc"><p>Choose the nearest business day to the given holiday. If both the preceding and following business days are equally far away, default to following business day. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga6d41db8ba0ea90d22df35889df452ada">◆ </a></span>Frequency</h2>
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<td class="memname">enum <a class="el" href="group__datetime.html#ga6d41db8ba0ea90d22df35889df452ada">Frequency</a></td>
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<p>Frequency of events. </p>
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<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="gga6d41db8ba0ea90d22df35889df452adaad7764a2ea2518891555bd395faffb4da"></a>NoFrequency </td><td class="fielddoc"><p>null frequency </p>
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<tr><td class="fieldname"><a id="gga6d41db8ba0ea90d22df35889df452adaa96be73c339468e5d0d9aed7ccc384bcc"></a>Once </td><td class="fielddoc"><p>only once, e.g., a zero-coupon </p>
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<tr><td class="fieldname"><a id="gga6d41db8ba0ea90d22df35889df452adaa508b18014c96e2d466c12b39d7f4e426"></a>Annual </td><td class="fielddoc"><p>once a year </p>
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<tr><td class="fieldname"><a id="gga6d41db8ba0ea90d22df35889df452adaad1a5868a1c314bb7f6ab68e2fa182b2d"></a>Semiannual </td><td class="fielddoc"><p>twice a year </p>
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<tr><td class="fieldname"><a id="gga6d41db8ba0ea90d22df35889df452adaacb332c66d96dd68b145f78c14a704f5c"></a>EveryFourthMonth </td><td class="fielddoc"><p>every fourth month </p>
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<tr><td class="fieldname"><a id="gga6d41db8ba0ea90d22df35889df452adaab4fce358383d1822f7596659e00b07f7"></a>Quarterly </td><td class="fielddoc"><p>every third month </p>
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<tr><td class="fieldname"><a id="gga6d41db8ba0ea90d22df35889df452adaa91a5f14e7e96afbf6429a2549d6896e8"></a>Bimonthly </td><td class="fielddoc"><p>every second month </p>
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<tr><td class="fieldname"><a id="gga6d41db8ba0ea90d22df35889df452adaa075d775ff1bb75474c994bd94e9629f4"></a>Monthly </td><td class="fielddoc"><p>once a month </p>
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<tr><td class="fieldname"><a id="gga6d41db8ba0ea90d22df35889df452adaa314730e6ae42badf810bc4ab9f3f376b"></a>EveryFourthWeek </td><td class="fielddoc"><p>every fourth week </p>
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<tr><td class="fieldname"><a id="gga6d41db8ba0ea90d22df35889df452adaa1b3b68c6c6974a8e343ea8d8b66c107f"></a>Biweekly </td><td class="fielddoc"><p>every second week </p>
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<tr><td class="fieldname"><a id="gga6d41db8ba0ea90d22df35889df452adaa39017ed07c435bd4b739cda6bf3e5a35"></a>Weekly </td><td class="fielddoc"><p>once a week </p>
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<tr><td class="fieldname"><a id="gga6d41db8ba0ea90d22df35889df452adaa6b15f8b55b10fefe6300b2f3bf60ad78"></a>Daily </td><td class="fielddoc"><p>once a day </p>
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<tr><td class="fieldname"><a id="gga6d41db8ba0ea90d22df35889df452adaa3a3a2404bef8994b2dd567620f839ed7"></a>OtherFrequency </td><td class="fielddoc"><p>some other unknown frequency </p>
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<h2 class="memtitle"><span class="permalink"><a href="#gaec3d5ec6653b2c392d449500b8f5cb3a">◆ </a></span>Weekday</h2>
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<td class="memname">enum <a class="el" href="group__datetime.html#gaec3d5ec6653b2c392d449500b8f5cb3a">Weekday</a></td>
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<p>Day's serial number MOD 7; WEEKDAY Excel function is the same except for Sunday = 7. </p>
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