diff --git a/index.html b/index.html
index 37c20c7..e0d558f 100644
--- a/index.html
+++ b/index.html
@@ -65,7 +65,7 @@
 <tr>
 <th>Phone</th>
 <td class="logo"><img class="logo" src="img/phone.svg" alt="Phone logo"></td>
-<td><span class="fa fa-plus"></span>33 6 07 47 84 34</td>
+<td><span class="fa fa-plus"></span> 33 6 07 47 84 34</td>
 </tr>
 </tbody></table>
 </article>
@@ -177,8 +177,9 @@ BIND, CertBot, CSS, DNS, HTML, HTTPd, HTTPS, NginX, TomCat
 <p class="sub">Exploring & automating Information Technologies</p>
 </div>
 <div class="time">
-<p class="duration">23 years</p>
-<p class="period">2025 ← 2002</p>
+<p class="duration"><time datetime="P23Y">23 years</time></p>
+<p class="period">
+<time datetime="2025">2025</time> ← <time datetime="2002-05">2002</time></p>
 </div></header>
 <ul>
 <li>booting, building, configuring, securing and maintaining operating systems</li>
@@ -196,8 +197,9 @@ BIND, CertBot, CSS, DNS, HTML, HTTPd, HTTPS, NginX, TomCat
 <p class="sub"><strong>DevOps</strong> @ DIRISI (Direction Interarmées des Réseaux d’Infrastructure et des SI)</p>
 </div></div>
 <div class="time">
-<p class="duration org">9 years</p>
-<p class="period">2025 ← 2016</p>
+<p class="duration org"><time datetime="P9Y">9 years</time></p>
+<p class="period">
+<time datetime="2025">2025</time> ← <time datetime="2016-09">2016</time></p>
 </div></header>
 
 <article><header>
@@ -207,8 +209,9 @@ BIND, CertBot, CSS, DNS, HTML, HTTPd, HTTPS, NginX, TomCat
 <p class="sub">CDAD-BDX (Defense Applications Development Center), Bordeaux</p>
 </div></div>
 <div class="time">
-<p class="duration">6 years</p>
-<p class="period">2025 ← 2019</p>
+<p class="duration"><time datetime="P6Y">6 years</time></p>
+<p class="period">
+<time datetime="2025">2025</time> ← <time datetime="2019-02">2019</time></p>
 </div></header>
 <ul>
 <li>configuring and maintaining tools: Gitea, GitLab, Jenkins, Nexus, SonarQube</li>
@@ -228,8 +231,9 @@ BIND, CertBot, CSS, DNS, HTML, HTTPd, HTTPS, NginX, TomCat
 <p class="sub">CDAD-BDX (Defense Applications Development Center), Bordeaux</p>
 </div></div>
 <div class="time">
-<p class="duration">2 years</p>
-<p class="period">2019 ← 2017</p>
+<p class="duration"><time datetime="P1Y5M">2 years</time></p>
+<p class="period">
+<time datetime="2019-02">2019</time> ← <time datetime="2017-09">2017</time></p>
 </div></header>
 <ul>
 <li>administration of a VMware vCloud with Virtual Machines and LXC containers</li>
@@ -247,8 +251,9 @@ BIND, CertBot, CSS, DNS, HTML, HTTPd, HTTPS, NginX, TomCat
 <p class="sub">CDAD-BDX (Defense Applications Development Center), Bordeaux</p>
 </div></div>
 <div class="time">
-<p class="duration">1 year</p>
-<p class="period">2017 ← 2016</p>
+<p class="duration"><time datetime="P1Y">1 year</time></p>
+<p class="period">
+<time datetime="2017-09">2017</time> ← <time datetime="2016-09">2016</time></p>
 </div></header>
 <ul>
 <li>installation of a development network: stations & LXC server running Debian</li>
@@ -268,8 +273,9 @@ BIND, CertBot, CSS, DNS, HTML, HTTPd, HTTPS, NginX, TomCat
 <p class="sub"><strong>Developer</strong> @ AAE (Armée de l’Air et de l’Espace)</p>
 </div></div>
 <div class="time">
-<p class="duration org">14 years</p>
-<p class="period">2016 ← 2002</p>
+<p class="duration org"><time datetime="P14Y4M">14 years</time></p>
+<p class="period">
+<time datetime="2016-09">2016</time> ← <time datetime="2002-05">2002</time></p>
 </div></header>
 
 <article><header>
@@ -279,8 +285,9 @@ BIND, CertBot, CSS, DNS, HTML, HTTPd, HTTPS, NginX, TomCat
 <p class="sub">GAIO (Operational IT Aerial Grouping), Mont-de-Marsan</p>
 </div></div>
 <div class="time">
-<p class="duration">8 years</p>
-<p class="period">2016 ← 2008</p>
+<p class="duration"><time datetime="P8Y">8 years</time></p>
+<p class="period">
+<time datetime="2016-09">2016</time> ← <time datetime="2008-09">2008</time></p>
 </div></header>
 <ul>
 <li>something</li>
@@ -301,8 +308,9 @@ DTM (Data Transfer Module) induction cards used by AlphaJet onboard computers</l
 <p class="sub">CEAM (Military Air Experiments Center), Mont-de-Marsan</p>
 </div></div>
 <div class="time">
-<p class="duration">6 years</p>
-<p class="period">2008 ← 2002</p>
+<p class="duration"><time datetime="P6Y4M">6 years</time></p>
+<p class="period">
+<time datetime="2008-09">2008</time> ← <time datetime="2002-05">2002</time></p>
 </div></header>
 <ul>Preparation, programming, unloading and replaying of missions (in Visual Basic)<br>
 for the AlphaJet, Transall, Mirage 2000, Mirage F1, Mirage IV & Jaguar aircrafts
@@ -327,8 +335,9 @@ for the AlphaJet, Transall, Mirage 2000, Mirage F1, Mirage IV & Jaguar aircrafts
 <p class="sub"><a href="https://forge.rwx.work/rwx.work/rwx">rwx @ forge.rwx.work</a></p>
 </div></div>
 <div class="time">
-<p class="duration">2 years</p>
-<p class="period">2025 ← 2023</p>
+<p class="duration"><time datetime="P2Y">2 years</time></p>
+<p class="period">
+<time datetime="2025">2025</time> ← <time datetime="2023-07">2023</time></p>
 </div></header>
 <ul>
 <li>something</li>
@@ -340,8 +349,9 @@ for the AlphaJet, Transall, Mirage 2000, Mirage F1, Mirage IV & Jaguar aircrafts
 <p class="sub"><a href="https://forge.rwx.work/rwx.work/spcd">spcd @ forge.rwx.work</a></p>
 </div>
 <div class="time">
-<p class="duration">1 year</p>
-<p class="period">2025 ← 2024</p>
+<p class="duration"><time datetime="P1Y">1 year</time></p>
+<p class="period">
+<time datetime="2025">2025</time> ← <time datetime="2024-03">2024</time></p>
 </div></header>
 <ul>
 <li>something</li>
@@ -354,8 +364,9 @@ for the AlphaJet, Transall, Mirage 2000, Mirage F1, Mirage IV & Jaguar aircrafts
 <p class="sub"><a href="https://forge.rwx.work/rwx.work/lsgm">lsgm @ forge.rwx.work</a></p>
 </div>
 <div class="time">
-<p class="duration">2 years</p>
-<p class="period">2025 ← 2023</p>
+<p class="duration"><time datetime="P2Y">2 years</time></p>
+<p class="period">
+<time datetime="2025">2025</time> ← <time datetime="2023-09">2023</time></p>
 </div></header>
 <ul>
 <li>something</li>
@@ -377,7 +388,8 @@ for the AlphaJet, Transall, Mirage 2000, Mirage F1, Mirage IV & Jaguar aircrafts
 </div></div>
 <div class="time">
 <p class="duration">2 years</p>
-<p class="period">2021 ← 2019</p>
+<p class="period">
+<time datetime="2021">2021</time> ← <time datetime="2019">2019</time></p>
 </div></header>
 <ul>
 <li>Information Technology, Master of Science, level 2</li>
@@ -392,7 +404,8 @@ for the AlphaJet, Transall, Mirage 2000, Mirage F1, Mirage IV & Jaguar aircrafts
 </div></div>
 <div class="time">
 <p class="duration">5 years</p>
-<p class="period">2019 ← 2014</p>
+<p class="period">
+<time datetime="2019">2019<time> ← <time datetime="2014">2014</time></p>
 </div></header>
 <ul>
 <li>Information Technology, Master of Science, level 1</li>