21点是几点

更新时间: 2021-12-10 01:14:25     

根据时间的计时方法有十二小时制和二十四小时制,换算方法是二十小时制时间减去12即为十二小时制的时间。所以21减去12=9点。在二十四小时之中,一天开始于早子时,23点~1点,每天的最后一分钟开始于夜子时之初23点(子初),而结束于夜子时之末24点(子正)。一天的24点等于下一天的0点。数字时钟显示从 0点到23点59分,不会显示出24点。

关键词:

如有意见、反馈、侵权或投诉等情况,请联系:

电话:
邮箱:

我们将会在48小时内给与处理!

版权所有 Copyright ? 2009-2020 tianqiyubao3.com

页面:/news/view-1220555/ | 耗时:0.9944 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=1220555 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1220555 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1220555 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1107909,1120902,1104268,1085590,1104312,1114026,1125397,1113331,1098213,1119444,1127785,1126042,1130081,1132171,1108119,1126510,1109503,1117482,1129281,1127603,1129741,1129071,1115197,1129555,1125942,1047897,1123751,1109352,1108484,1107164) ORDER BY field (ArticleID,1107909,1120902,1104268,1085590,1104312,1114026,1125397,1113331,1098213,1119444,1127785,1126042,1130081,1132171,1108119,1126510,1109503,1117482,1129281,1127603,1129741,1129071,1115197,1129555,1125942,1047897,1123751,1109352,1108484,1107164)