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<table border="0" cellspacing="0" cellpadding="0"><tr valign="top"><td align="left"><div class="page_title">Time Conversion Tool</div>
<p>
Use this tool to convert from calendar date/time format to Julian date
and vice versa.
Optionally convert between selected world time zones and
determine the day-of-week for the specified date.
</p>

<a name="top"> </a><form method="post" action="https://ssd.jpl.nasa.gov/tc.cgi#top" enctype="multipart/form-data">
<b>Enter a <em>calendar date and time</em></b>
<br>(year-month-day hour:minute:second)...
<br>
<div style="background-color: #FFFFCC">
<table border="0" cellspacing="0" cellpadding="4"><tr><td align="left"><table border="0" cellspacing="0" cellpadding="2"><tr><td align="left" nowrap><label for="1">Era</label></td> <td align="left" nowrap>Date and Time</td> <td align="left" nowrap><label for="3">Time Zone</label></td></tr> <tr><td align="left" nowrap><select name="era" tabindex="1" id="1">
<option value="AD">A.D.</option>
<option value="BC">B.C.</option>
</select></td> <td align="left" nowrap><input type="text" name="cd" tabindex="2" value="2021-Mar-19 01:14:32" size="20" maxlength="28" alt="calendar date/time" /></td> <td align="left" nowrap><select name="z1" tabindex="3" id="3">
<option value="-11">UT-11</option>
<option value="-10">UT-10</option>
<option value="-9">UT-9</option>
<option value="-8">UT-8 (PST)</option>
<option value="-7">UT-7 (MST/PDT)</option>
<option value="-6">UT-6 (CST/MDT)</option>
<option value="-5">UT-5 (EST/CDT)</option>
<option value="-4">UT-4 (EDT)</option>
<option value="-3">UT-3</option>
<option value="-2">UT-2</option>
<option value="-1">UT-1</option>
<option selected="selected" value="0">UT</option>
<option value="1">UT+1</option>
<option value="2">UT+2</option>
<option value="3">UT+3</option>
<option value="4">UT+4</option>
<option value="5">UT+5</option>
<option value="5.5">UT+5:30</option>
<option value="5.75">UT+5:45</option>
<option value="6">UT+6</option>
<option value="6.5">UT+6:30</option>
<option value="7">UT+7</option>
<option value="8">UT+8</option>
<option value="9">UT+9</option>
<option value="9.5">UT+9:30</option>
<option value="10">UT+10</option>
<option value="11">UT+11</option>
<option value="11.5">UT+11:30</option>
<option value="12">UT+12</option>
<option value="13">UT+13</option>
</select></td></tr> <tr><td align="right" colspan="2" nowrap><label><input type="checkbox" name="u_z2" value="1" tabindex="4" checked="checked" id="4" />Output Alternate Zone:</label></td> <td><label for="5"></label><select name="z2" tabindex="5" id="5">
<option value="-11">UT-11</option>
<option value="-10">UT-10</option>
<option value="-9">UT-9</option>
<option value="-8">UT-8 (PST)</option>
<option selected="selected" value="-7">UT-7 (MST/PDT)</option>
<option value="-6">UT-6 (CST/MDT)</option>
<option value="-5">UT-5 (EST/CDT)</option>
<option value="-4">UT-4 (EDT)</option>
<option value="-3">UT-3</option>
<option value="-2">UT-2</option>
<option value="-1">UT-1</option>
<option value="0">UT</option>
<option value="1">UT+1</option>
<option value="2">UT+2</option>
<option value="3">UT+3</option>
<option value="4">UT+4</option>
<option value="5">UT+5</option>
<option value="5.5">UT+5:30</option>
<option value="5.75">UT+5:45</option>
<option value="6">UT+6</option>
<option value="6.5">UT+6:30</option>
<option value="7">UT+7</option>
<option value="8">UT+8</option>
<option value="9">UT+9</option>
<option value="9.5">UT+9:30</option>
<option value="10">UT+10</option>
<option value="11">UT+11</option>
<option value="11.5">UT+11:30</option>
<option value="12">UT+12</option>
<option value="13">UT+13</option>
</select></td></tr> <tr><td>&nbsp;</td> <td align="left" colspan="2" nowrap><input type="submit" tabindex="6" name="u_cal" value="Update" /> using calendar date and time</td></tr></table>
</td></tr></table>
</div>
<input type="hidden" name="jd" value="2459292.5517593" />
</form>
<form method="post" action="https://ssd.jpl.nasa.gov/tc.cgi#top" enctype="multipart/form-data">
<br>
<em>or</em> <b>Enter a <em>Julian date</em> ...</b><br>
<div style="background-color: #FFFFCC">
<table border="0" cellspacing="0" cellpadding="4"><tr><td align="left"><table border="0" cellspacing="0" cellpadding="2"><tr><td align="left" nowrap><input type="text" name="jd" value="2459292.5517593" size="15" maxlength="15" alt="Julian date" />UT&nbsp;&nbsp;<input type="submit" name="u_jd" value="Update" /> using Julian date</td></tr></table>
</td></tr></table>
</div>
<input type="hidden" name="cd" value="2021-Mar-19 01:14:32" /><input type="hidden" name="z1" value="0" /><input type="hidden" name="z2" value="-7" /><input type="hidden" name="u_z2" value="1" /></form>
</td> <td align="left" nowrap>&nbsp;&nbsp;&nbsp;</td> <td align="left" nowrap><table border="1" cellspacing="0" cellpadding="4"><tr><td align="left" nowrap><h3><a name="out">Equivalent Times</a></h3><pre>

<b>Input Time Zone: UT</b>
-------------------------------------------------------
A.D. 2021-Mar-19 01:14:32.00 = A.D. 2021-Mar-19.0517593
A.D. 2021-03-19 01:14:32.00 = A.D. 2021-03-19.0517593
A.D. 2021--078 01:14:32.00 = A.D. 2021--078.0517593

Day-of-Week: Friday


<b>Alternate Time Zone: UT-7 (MST/PDT)</b>
-------------------------------------------------------
A.D. 2021-Mar-18 18:14:32.00 = A.D. 2021-Mar-18.7600926
A.D. 2021-03-18 18:14:32.00 = A.D. 2021-03-18.7600926
A.D. 2021--077 18:14:32.00 = A.D. 2021--077.7600926

Day-of-Week: Thursday

<b>Julian Date</b>
------------------
2459292.5517593 UT
</pre>
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2021-Mar-19 01:14 UT
<br>(server date/time)&nbsp;&nbsp;
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