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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif">Hi All,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif">If you don’t mind, I have a few questions on the provided proposal:<o:p></o:p></span></p>
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<li class="MsoListParagraph" style="margin-left:-.25in;mso-list:l0 level1 lfo1"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif">When would this take effect?
<o:p></o:p></span></li><li class="MsoListParagraph" style="margin-left:-.25in;mso-list:l0 level1 lfo1"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif">How would a recipient know if the time is epoched to 2020 or to 1958 (is there a flag or a modulo)?
<o:p></o:p></span></li><li class="MsoListParagraph" style="margin-left:-.25in;mso-list:l0 level1 lfo1"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif">Would it be implemented to be backward compatible?<o:p></o:p></span></li><li class="MsoListParagraph" style="margin-left:-.25in;mso-list:l0 level1 lfo1"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif">Has this been socialized with the BIPM to ensure with certainty that there will not be a leap second between now
and when they plan to terminate UTC leap seconds in c2035, or to understand if BIPM or National Metrology Institutes have comments on the proposal?<o:p></o:p></span></li></ol>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif">Thank you for considering these questions.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif">Cheryl<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal" align="left" style="text-align:left"><span style="font-size:11.0pt;font-family:Helvetica;color:#0A2F41">----------<o:p></o:p></span></p>
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<p class="MsoNormal" align="left" style="text-align:left"><b><span style="font-family:Helvetica">Cheryl Gramling</span></b><span style="font-family:Helvetica"><o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left"><b><span style="font-size:9.0pt;font-family:Helvetica">Lunar Strategist and PNT Lead</span></b><span style="font-size:11.0pt;font-family:Helvetica"><o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left"><span style="font-size:9.0pt;font-family:Helvetica">Space Communications and Navigation</span><span style="font-size:11.0pt;font-family:Helvetica"><o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left"><span style="font-size:9.0pt;font-family:Helvetica">Mary W. Jackson NASA Headquarters
</span><span style="font-size:11.0pt;font-family:Helvetica"><o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left"><span style="font-size:9.0pt;font-family:Helvetica;color:black">300 E Street SW, Washington, DC 20546<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left"><span style="font-size:9.0pt;font-family:Helvetica;color:black">M:
</span><span style="font-size:9.0pt;font-family:Helvetica">240.328.5517<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left"><span style="font-size:9.0pt;font-family:Helvetica">cheryl.j.gramling@nasa.gov</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal" align="left" style="text-align:left"><b><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:black;mso-fareast-language:JA">From:
</span></b><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:black;mso-fareast-language:JA">SEA-TIME <sea-time-bounces@mailman.ccsds.org> on behalf of "sawczuck.miriam--- via SEA-TIME" <sea-time@mailman.ccsds.org><br>
<b>Reply-To: </b>"sawczuck.miriam@jaxa.jp" <sawczuck.miriam@jaxa.jp><br>
<b>Date: </b>Monday, June 9, 2025 at 12:18 PM<br>
<b>To: </b>"sea-time@mailman.ccsds.org" <sea-time@mailman.ccsds.org><br>
<b>Subject: </b>[EXTERNAL] [BULK] [SEA-TIME] Proposal for new epoch (CCSDS spring meeting)<o:p></o:p></span></p>
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<p class="MsoNormal" align="left" style="text-align:left"><span style="font-size:12.0pt;font-family:"Aptos",sans-serif;mso-fareast-language:JA"><o:p> </o:p></span></p>
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<b><span style="font-size:10.0pt;font-family:"Aptos",sans-serif;color:black">CAUTION:</span></b><span style="font-size:12.0pt;font-family:"Aptos",sans-serif;color:black">
</span><span style="font-size:10.0pt;font-family:"Aptos",sans-serif;color:black">This email originated from outside of NASA. Please take care when clicking links or opening attachments. Use the "Report Message" button to report suspicious messages to the
NASA SOC.</span><span style="font-size:12.0pt;font-family:"Aptos",sans-serif;color:black">
</span><span style="font-size:12.0pt;font-family:"Aptos",sans-serif"><o:p></o:p></span></p>
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<br>
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:ZH-TW">D</span><span style="font-size:11.0pt;mso-fareast-language:JA">ear all,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:JA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:JA">As discussed in today<span lang="JA">’</span>s meeting I<span lang="JA">’</span>m sending you our proposal document for a new standard epoch.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:JA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:JA">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:JA">Miriam<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:ZH-TW"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"游ゴシック Light",sans-serif;mso-fareast-language:ZH-TW">--------------------------------------------------------------------------<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="ZH-TW" style="font-size:9.0pt;font-family:"游ゴシック Light",sans-serif;mso-fareast-language:ZH-TW">国立研究開発法人 宇宙航空研究開発機構（</span><span style="font-size:9.0pt;font-family:"游ゴシック Light",sans-serif;mso-fareast-language:ZH-TW">JAXA<span lang="ZH-TW">）</span><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="JA" style="font-size:9.0pt;font-family:"游ゴシック Light",sans-serif;mso-fareast-language:JA">宇宙科学研究所 科学衛星運用・データ利用ユニット（</span><span style="font-size:9.0pt;font-family:"游ゴシック Light",sans-serif;mso-fareast-language:JA">ISAS/C-SODA<span lang="JA">）</span><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"游ゴシック Light",sans-serif;mso-fareast-language:JA">Sawczuck Miriam (<span lang="JA">サヴツック・ミリアム）</span><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"游ゴシック Light",sans-serif;mso-fareast-language:JA">TEL<span lang="JA">：</span>070-3117-4925<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"游ゴシック Light",sans-serif;mso-fareast-language:JA">Mail<span lang="JA">：</span><a href="mailto:sawczuck.miriam@jaxa.jp"><span style="color:windowtext">sawczuck.miriam@jaxa.jp</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"游ゴシック Light",sans-serif;mso-fareast-language:JA">--------------------------------------------------------------------------<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:JA"><o:p> </o:p></span></p>
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