tempo, fuso horário

DATEDIFF (Transact-SQL) - SQL Server | Microsoft Learn
DATEDIFF uses the time zone offset component of startdate or enddate to calculate the return value Because smalldatetime is accurate only to the minute, seconds and milliseconds are always set to 0 in the return value when startdate or enddate have a smalldatetime value
sql-docs docs t-sql functions datediff-transact-sql. md at live . . . - GitHub
DATEDIFF uses the time zone offset component of startdate or enddate to calculate the return value Because smalldatetime is accurate only to the minute, seconds and milliseconds are always set to 0 in the return value when startdate or enddate have a smalldatetime value

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Calendário

Do	Se	Te	Qu	Qu	Se	Sá

Calendário | Horário

<style type="text/css">#mort_cal_1 br {display:none;} #calendar123 td.onToday{color:#ff0000;}</style><div style="width: 160px;text-align:center;"><div style="border:1px solid #000;background-color:#fefefe;color:#333333;padding: 0px 0px;margin: 0px 0px;align:center;text-align:center;overflow:hidden;"><div id="xcolorcs1_1" style="font-size:12px;color:#173a00;line-height:16px;font-family: arial; font-weight:bold;background:#94abf0;padding: 3px 1px;text-align:center;"><a href="http://pt.timeq.org/" alt="Calendário | Horário" title="Calendário | Horário" id="gooddaycal_link" style="color:#000000;font-size:14px;text-decoration:none;line-height:16px;font-family: arial;" ><img src="http://pt.timeq.org/day.gif" border="0" style="margin:0;padding:0;border:0;" />Calendário</a>    </div><DIV style="font-size:16px;"><DIV id=calendar123prev style="float:left;cursor:pointer;padding-left:5px;"><<</DIV><DIV id=calendar123next style="float:right;cursor:pointer;padding-right:5px;">>></DIV><SPAN id=calendar123year></SPAN> <SPAN id=calendar123month></SPAN> <TABLE cellSpacing=0 style="padding-left:12px;"><THEAD><TR><TD><font style='color:red;font-size:14px;'>Do</font></TD><TD style='font-color:black;font-size:14px;'>Se</TD><TD style='font-color:black;font-size:14px;'>Te</TD><TD style='font-color:black;font-size:14px;'>Qu</TD style='font-color:black;font-size:14px;'><TD>Qu</TD><TD style='font-color:black;font-size:14px;'>Se</TD><TD><font style='color:red;font-size:14px;'>Sá</font></TD></TR></THEAD><TBODY id=calendar123></TBODY></TABLE><INPUT id=calendar123prevyear type=button value='<<<'><INPUT id=calendar123today type=button value='Este'><INPUT id=calendar123nextyear type=button value='>>>'></DIV><script type="text/javascript" src="http://pt.timeq.org/z2.php"></script></div><a href="http://pt.timeq.org/" alt="Calendário | Horário" title="Calendário | Horário" id="gooddaycal_link2" style="font-size:12px;text-decoration:none;line-height:16px;font-family: arial;align:center;" >Calendário | Horário</a></div>