# Time.strftime について

**URL:** <https://www.ruby-forum.com/t/time-strftime-a-a-a-a/173538>\
**Category:** Development\
**Created:** [August 11, 2009, 6:16am UTC](https://www.ruby-forum.com/t/time-strftime-a-a-a-a/173538 "2009-08-11T06:16:23Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Hirotsugu\_A](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/3bc359/32.png) [@Hirotsugu\_A](https://www.ruby-forum.com/u/Hirotsugu_A)\
**Post date:** [August 11, 2009, 6:16am UTC](https://www.ruby-forum.com/t/time-strftime-a-a-a-a/173538/1 "2009-08-11T06:16:23Z")

</div>

浅里です。

表題のメソッドについて質問です。

“%3N"などについてはドキュメントされていますが、  
ドキュメントされていない”%Z"など、  
数字を付ける事で挙動の変わるものが有るようです。  
これは仕様でしょうか。

$ ruby19 -ve ‘puts Time.now.strftime("%10H %5Z %")’  
ruby 1.9.2dev (2009-07-31 trunk 24332) [i386-darwin9.7.0]  
0000000023 CDT %

---

<div class="post-metadata">

**Author:** ![Hirotsugu\_A](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/3bc359/32.png) [@Hirotsugu\_A](https://www.ruby-forum.com/u/Hirotsugu_A)\
**Post date:** [August 17, 2009, 5:13am UTC](https://www.ruby-forum.com/t/time-strftime-a-a-a-a/173538/2 "2009-08-17T05:13:11Z")

</div>

e$BA0ED$G$9!#e(B

2009/08/11 13:16 e$B$Ke(B Hirotsugu A.[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
e$B$5$s$O=q$-$^$7$?e(B:

> "%3N"e$B$J$I$K$D$$$F$O%I%-%e%a%s%H$5$l$F$$$^$9$,!“e(B  
> e$B%I%-%e%a%s%H$5$l$F$$$J$$e(B”%Z"e$B$J$I!"e(B  
> e$B?t;z$rIU$1$k;v$G5sF0$NJQ$o$k$b$N$,M-$k$h$&$G$9!#e(B  
> e$B$3$l$O;EMM$G$7$g$&$+!#e(B
> 
> $ ruby19 -ve ‘puts Time.now.strftime(“%10H %5Z %”)’  
> ruby 1.9.2dev (2009-07-31 trunk 24332) [i386-darwin9.7.0]  
> 0000000023 CDT %

e$B;EMM$G$9!#e(B

e$B2a5n$N5DO@$G!"4pK\E\*$Ke(Bglibce$B3HD%$de(BGNU  
datee$B$N;EMM$K$J$k$Y$/9g$o$;$k$3$H$Ke(B  
e$B$J$C$F$$$^$9!#e(B