<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<div dir="ltr" style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
The need for solar timekeeping infrastructure is implicit (and sometimes explicit) in the multiple decades of this mailing list and related meetings and websites, e.g.,
<a href="https://futureofutc.org" data-outlook-id="8d3e8af6-602e-4e2b-ba62-8a315a08f6ca">
https://futureofutc.org</a>. “Requirements” was the first word of the title.</div>
<div dir="ltr" style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div dir="ltr" style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
And if the more dramatic prognostications of commercial space come to pass and large numbers of people take residence on neighboring planets, they, too, will require solar time:</div>
<div dir="ltr" style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt;">
<br>
</div>
<div dir="ltr" style="margin-left: 40px; font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<a href="http://hanksville.org/futureofutc/preprints/files/28_AAS_13-515_Seaman.pdf" data-outlook-id="695d5b12-6dc4-4e04-94a9-a0219567579e">http://hanksville.org/futureofutc/preprints/files/28_AAS_13-515_Seaman.pdf</a></div>
<div dir="ltr" style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div dir="ltr" style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
One hopes that funding and motivation to maintain and enhance UT1 will remain indefinitely. It is only a piece of the puzzle.</div>
<div dir="ltr" style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div dir="ltr" style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Rob</div>
<div dir="ltr" style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div dir="ltr" style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
—</div>
<div dir="ltr" style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div id="mail-editor-reference-message-container">
<div class="ms-outlook-mobile-reference-message skipProofing">
<meta name="Generator" content="Microsoft Exchange Server">
</div>
<div class="ms-outlook-mobile-reference-message skipProofing">On 12/2/25, 8:46 AM, "Poul-Henning Kamp" wrote:</div>
<div class="ms-outlook-mobile-reference-message skipProofing" style="font-size: 11pt;">
<br>
--------<br>
Seaman, Robert Lewis - (rseaman) writes:<br>
<br>
> I’m sure I’ll be long gone, but I predict the need for significant<br>
> new infrastructure for solar timekeeping will appear in slide decks<br>
> like these in decades and centuries hence.<br>
<br>
I see nobody anywhere suggesting that UT1 should not be measured<br>
and maintained in the future (see for instance page 36)<br>
<br>
But I also fail to see even the remotest outline of what the<br>
"significant new infrastructure" you talk about might be or should do ?<br>
<br>
--<br>
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20<br>
phk@FreeBSD.ORG | TCP/IP since RFC 956<br>
FreeBSD committer | BSD since 4.3-tahoe <br>
Never attribute to malice what can adequately be explained by incompetence.<br>
<br>
</div>
</div>
</body>
</html>