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SGSiteGraph

time.gov

National Institute of Standards and Technology | NIST

Last scanned Jul 26, 2026, 5:17 AM · 1 view

85

Overall score

Great

Summary

NIST promotes U.S. This website uses Apache hosted on NOAA-BOULDER - National Oceanic and Atmospheric Administration, US. SEO is fair (60/100) and accessibility is good (85/100). Security scores excellent (100/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.

NIST promotes U.S. innovation and industrial competitiveness by advancing measurement science, standards, and technology in ways that enhance economic security and improve our quality of life.

United States
Hosted on NOAA-BOULDER - National Oceanic and Atmospheric Administration, US

Top issues to fix

8 issues found · 2 high priority

  • No H1 heading found

    SEO

    Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.

  • Missing viewport meta tag

    Accessibility

    Add <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.

  • Meta description longer than 160 characters

    SEO

    Trim the meta description to under 160 characters to avoid truncation in search results.

  • Missing canonical link

    SEO

    Add <link rel="canonical"> so search engines know which URL variant to index.

  • No structured data (JSON-LD) found

    SEO

    Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

  • robots.txt not found

    SEO

    Publish /robots.txt with a Sitemap: directive to guide crawlers.

+2 more issues — details in the sections below.

60

SEO

6 issue(s) found

100

Performance

251 ms

100

Security

HTTPS & header checks

85

Accessibility

2 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

Company details published in this site's own structured data.

NIST promotes U.S. innovation and industrial competitiveness by advancing measurement science, standards, and technology in ways that enhance economic security and improve our quality of life.

Meta tags

Title
National Institute of Standards and Technology | NIST
Description
NIST promotes U.S. innovation and industrial competitiveness by advancing measurement science, standards, and technology in ways that enhance economic security and improve our quality of life.
Canonical
Language
en
Charset
utf-8
Viewport
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
The Official U.S. Time | NIST
og:description
The National Institute of Standards and Technology - Time and Frequency Division maintains the standard for frequency and time interval for the United States, provides official time to the United States, and carries out a broad program of research and service activities in time and frequency metrology.
og:type
website
og:url
https://www.time.gov/

Twitter Card

twitter:card
—
twitter:title
The Official U.S. Time | NIST
twitter:description
The National Institute of Standards and Technology - Time and Frequency Division maintains the standard for frequency and time interval for the United States, provides official time to the United States, and carries out a broad program of research and service activities in time and frequency metrology.

Technologies

Detected frameworks, languages, and tools.

jQueryGoogle AnalyticsApache

Hosting & CDN

CDN provider
—
IP address
132.163.4.22
ASN
AS2648 (NOAA-BOULDER - National Oceanic and Atmospheric Administration, US)

DNS records

TypeValue
A
  • 132.163.4.22
  • 129.6.13.35
AAAA
  • 2610:20:6b01:4::22
  • 2610:20:6005:13::35
MX—
TXT
  • v=spf1 -all
  • w280z6rmhb445prwbfyqptc375zv6bfn
  • _4pvdp9qqg695tftpki5hqle6bo3fc56
NS
  • blue.foundationdns.net
  • blue.foundationdns.org
  • blue.foundationdns.com
CAA—
CNAME—
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
DigiCert Inc
Subject
time.gov
Valid from
May 26, 2026
Valid to
Dec 10, 2026
Days until expiry
137
SAN domains
time.gov, *.time.gov

Security headers

  • Strict-Transport-SecurityEnabled
  • Content-Security-PolicyEnabled
  • X-Frame-OptionsEnabled
  • X-Content-Type-OptionsEnabled
  • Referrer-PolicyMissing
  • Permissions-PolicyMissing

Compression: none · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 0 · H3 0

Links

0 internal · 20 external · 2 broken

Images

11 total · 0 missing alt

Scripts / Styles

8 scripts · 2 stylesheets

JS / CSS size

136 KB · 11.2 KB

Page size

18.7 KB

Robots.txt & Sitemap

robots.txt
Not found
Disallow rules
0
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Meta description longer than 160 characters
  • Missing canonical link
  • No H1 heading found
  • No structured data (JSON-LD) found
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

  • No H1 heading found
  • Missing viewport meta tag

Scan details

Requested URL
https://time.gov
Final URL
https://time.gov
HTTP status
200
HTTP version
HTTP/1.1
Response time
251 ms
HTML size
18.7 KB
Redirect chain
https://time.gov

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Frequently asked questions

What technology does time.gov use?
time.gov is built with jQuery, Google Analytics, Apache.
Is time.gov secure (HTTPS)?
Yes. time.gov uses TLS 1.3 with a certificate issued by DigiCert Inc, valid until Dec 10, 2026.
Who hosts time.gov?
time.gov is hosted on NOAA-BOULDER - National Oceanic and Atmospheric Administration, US.
What is time.gov's SEO score?
time.gov scored 60/100 for SEO in the latest analysis (fair).
What is time.gov's overall website score?
time.gov has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.