diff --git a/src/app/Dates.php b/src/app/Dates.php
new file mode 100644
index 0000000..4448f8b
--- /dev/null
+++ b/src/app/Dates.php
@@ -0,0 +1,107 @@
+<?php
+declare(strict_types=1);
+
+namespace MyPrayerJournal;
+
+/**
+ * The different distance formats supported
+ */
+enum DistanceFormat
+{
+    case LessThanXMinutes;
+    case XMinutes;
+    case AboutXHours;
+    case XHours;
+    case XDays;
+    case AboutXWeeks;
+    case XWeeks;
+    case AboutXMonths;
+    case XMonths;
+    case AboutXYears;
+    case XYears;
+    case OverXYears;
+    case AlmostXYears;
+
+    /**
+     * Return the formatting string for the given format and number
+     * 
+     * @param DistanceFormat $it The distance format
+     * @param bool $singular If true, returns the singular version; if false (default), returns the plural version
+     * @return string The format string
+     */
+    public static function format(DistanceFormat $it, bool $singular = false): string
+    {
+        return match ($it) {
+            DistanceFormat::LessThanXMinutes => $singular ? 'less than a minute' : 'less than %i minutes',
+            DistanceFormat::XMinutes         => $singular ? 'a minute'           : '%i minutes',
+            DistanceFormat::AboutXHours      => $singular ? 'about an hour'      : 'about %i hours',
+            DistanceFormat::XHours           => $singular ? 'an hour'            : '%i hours',
+            DistanceFormat::XDays            => $singular ? 'a day'              : '%i days',
+            DistanceFormat::AboutXWeeks      => $singular ? 'about a week'       : 'about %i weeks',
+            DistanceFormat::XWeeks           => $singular ? 'a week'             : '%i weeks',
+            DistanceFormat::AboutXMonths     => $singular ? 'about a month'      : 'about %i months',
+            DistanceFormat::XMonths          => $singular ? 'a month'            : '%i months',
+            DistanceFormat::AboutXYears      => $singular ? 'about a year'       : 'about %i years',
+            DistanceFormat::XYears           => $singular ? 'a year'             : '%i years',
+            DistanceFormat::OverXYears       => $singular ? 'over a year'        : 'over %i years',
+            DistanceFormat::AlmostXYears     => $singular ? 'almost a year'      : 'almost %i years',
+        };
+    }
+}
+
+class Dates
+{
+    /** Minutes in a day */
+    private const A_DAY =  1_440;
+
+    /** Minutes in two days(-ish) */
+    private const ALMOST_2_DAYS = 2_520;
+    
+    /** Minutes in a month */
+    private const A_MONTH = 43_200;
+    
+    /** Minutes in two months */
+    private const TWO_MONTHS = 86_400;
+
+    /**
+     * Get a UTC-referenced current date/time
+     * 
+     * @return \DateTimeImmutable The current date/time with UTC reference
+     */
+    public static function now(): \DateTimeImmutable
+    {
+        return new \DateTimeImmutable(timezone: new \DateTimeZone('Etc/UTC'));
+    }
+
+    /**
+     * Format the distance between two instants in approximate English terms
+     * 
+     * @param \DateTimeInterface $startOn The starting date/time for the comparison
+     * @param \DateTimeInterface $endOn THe ending date/time for the comparison
+     * @return string The formatted interval
+     */
+    public static function formatDistance(\DateTimeInterface $startOn, \DateTimeInterface $endOn): string
+    {
+        $diff    = $startOn->diff($endOn);
+        $minutes =
+            $diff->i + ($diff->h * 60) + ($diff->d * 60 * 24) + ($diff->m * 60 * 24 * 30) + ($diff->y * 60 * 24 * 365);
+        $months = round($minutes / self::A_MONTH);
+        $years  = $months / 12;
+        [ $format, $number ] = match (true) {
+            $minutes < 1                   => [ DistanceFormat::LessThanXMinutes, 1 ],
+            $minutes < 45                  => [ DistanceFormat::XMinutes, $minutes ],
+            $minutes < 90                  => [ DistanceFormat::AboutXHours, 1 ],
+            $minutes < self::A_DAY         => [ DistanceFormat::AboutXHours, round($minutes / 60) ],
+            $minutes < self::ALMOST_2_DAYS => [ DistanceFormat::XDays, 1 ],
+            $minutes < self::A_MONTH       => [ DistanceFormat::XDays, round($minutes / self::A_DAY) ],
+            $minutes < self::TWO_MONTHS    => [ DistanceFormat::AboutXMonths, round($minutes / self::A_MONTH) ],
+            $months      < 12              => [ DistanceFormat::XMonths, round($minutes / self::A_MONTH) ],
+            $months % 12 < 3               => [ DistanceFormat::AboutXYears, $years ],
+            $months % 12 < 9               => [ DistanceFormat::OverXYears, $years ],
+            default                        => [ DistanceFormat::AlmostXYears, $years + 1 ],
+        };
+
+        $relativeWords = sprintf(DistanceFormat::format($format, $number == 1), $number);
+        return $startOn > $endOn ? "$relativeWords ago" : "in $relativeWords";
+    }
+}
diff --git a/src/app/index.php b/src/app/index.php
index 7d159a3..110c2c7 100644
--- a/src/app/index.php
+++ b/src/app/index.php
@@ -38,6 +38,16 @@ app()->group('/user', function () {
     app()->get('/log-off',        AppUser::logOff(...));
 });
 
+// Extract the user's time zone from the request, if present
+app()->use(new class extends \Leaf\Middleware {
+    public function call()
+    {
+        $_REQUEST['USER_TIME_ZONE'] = new \DateTimeZone(
+            array_key_exists('HTTP_X_TIME_ZONE', $_SERVER) ? $_SERVER['HTTP_X_TIME_ZONE'] : 'Etc/UTC');
+        $this->next();
+    }
+});
+
 // TODO: remove before go-live
 $stdOut = fopen('php://stdout', 'w');
 function stdout(string $msg)
diff --git a/src/app/pages/components/journal_card.view.php b/src/app/pages/components/journal_card.view.php
index 59ad0fc..9458802 100644
--- a/src/app/pages/components/journal_card.view.php
+++ b/src/app/pages/components/journal_card.view.php
@@ -1,5 +1,18 @@
 <?php
-$spacer = '<span>&nbsp;</span>'; ?>
+use MyPrayerJournal\Dates;
+
+$spacer = '<span>&nbsp;</span>';
+/**
+ * Format the activity and relative time
+ * 
+ * @param string $activity The activity performed (activity or prayed)
+ * @param \DateTimeImmutable $asOf The date/time the activity was performed
+ */
+function formatActivity(string $activity, \DateTimeImmutable $asOf)
+{
+    echo "last $activity <span title=\"" . $asOf->setTimezone($_REQUEST['USER_TIME_ZONE'])->format('l, F jS, Y/g:ia T')
+        . '">' . Dates::formatDistance(Dates::now(), $asOf) . '</span>';
+} ?>
 <div class="col">
     <div class="card h-100">
         <div class="card-header p-0 d-flex" role="tool-bar">
@@ -27,13 +40,10 @@ $spacer = '<span>&nbsp;</span>'; ?>
         </div>
         <div class="card-footer text-end text-muted px-1 py-0">
             <em><?php
-                // TODO: relative time, time zone handling, etc.
-                if (is_null($request->lastPrayed)) {
-                    echo "last activity {$request->asOf}";
-
-                } else {
-                    echo "last prayed {$request->lastPrayed}";
-                } ?>
+                [ $activity, $asOf ] = is_null($request->lastPrayed)
+                    ? [ 'activity', $request->asOf ]
+                    : [ 'prayed',   $request->lastPrayed ];
+                formatActivity($activity, $asOf); ?>
             </em>
         </div>
     </div>
diff --git a/src/app/pages/journal.view.php b/src/app/pages/journal.view.php
index 0db73ab..ebb3280 100644
--- a/src/app/pages/journal.view.php
+++ b/src/app/pages/journal.view.php
@@ -5,7 +5,7 @@
             <span class="material-icons">add_box</span> Add a Prayer Request
         </a>
     </p>
-    <p hx-get="/components/journal-items" hx-swap="outerHTML" hx-trigger="load">
+    <p hx-get="/components/journal-items" hx-swap="outerHTML" hx-trigger="load delay:.25s">
         Loading your prayer journal&hellip;
     </p>
     <div id="notesModal" class="modal fade" tabindex="-1" aria-labelled-by="nodesModalLabel" aria-hidden="true">