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Comment:Clarify the operation of the "weekday" date and time modifier.
Timelines: family | ancestors | descendants | both | branch-3.25
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SHA3-256:b4b8f35ef1522400530e555bb6c939d78ad47d23758c1426f859d6b3a04e6fa6
User & Date: drh 2018-09-24 14:46:58
Context
2018-09-25
15:02
Preliminary changes for version 3.25.2. check-in: e00e728eae user: drh tags: branch-3.25
2018-09-24
14:46
Clarify the operation of the "weekday" date and time modifier. check-in: b4b8f35ef1 user: drh tags: branch-3.25
14:38
Improved linkage to window functions. check-in: 1c7ab913f0 user: drh tags: branch-3.25
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Changes to pages/lang.in.

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so the date is normalized to 2001-05-01.  ^A similar effect occurs when
the original date is February 29 of a leapyear and the modifier is
&plusmn;N years where N is not a multiple of four.</p>

<p>^The "start of" modifiers (7 through 9) shift the date backwards 
to the beginning of the current month, year or day.</p>

<p>^The "weekday" modifier advances the date forward to the next date 
where the weekday number is N. Sunday is 0, Monday is 1, and so forth.</p>




<p>^The "unixepoch" modifier (11) only works if it immediately follows 
a timestring in the DDDDDDDDDD format. 
^This modifier causes the DDDDDDDDDD to be interpreted not 
as a Julian day number as it normally would be, but as
[http://en.wikipedia.org/wiki/Unix_time | Unix Time] - the 
number of seconds since 1970.  If the "unixepoch" modifier does not







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so the date is normalized to 2001-05-01.  ^A similar effect occurs when
the original date is February 29 of a leapyear and the modifier is
&plusmn;N years where N is not a multiple of four.</p>

<p>^The "start of" modifiers (7 through 9) shift the date backwards 
to the beginning of the current month, year or day.</p>

<p>^The "weekday" modifier advances the date forward, if necessary,
to the next date where the weekday number is N. Sunday is 0, Monday is 1,
and so forth.
^If the date is already on the desired weekday, the "weekday" modifier
leaves the date unchanged.  </p>

<p>^The "unixepoch" modifier (11) only works if it immediately follows 
a timestring in the DDDDDDDDDD format. 
^This modifier causes the DDDDDDDDDD to be interpreted not 
as a Julian day number as it normally would be, but as
[http://en.wikipedia.org/wiki/Unix_time | Unix Time] - the 
number of seconds since 1970.  If the "unixepoch" modifier does not