diff --git a/web/src/endpoints/availability/mod.rs b/web/src/endpoints/availability/mod.rs
index 155ee7d6..eaf28a42 100644
--- a/web/src/endpoints/availability/mod.rs
+++ b/web/src/endpoints/availability/mod.rs
@@ -4,7 +4,7 @@ use serde::Deserialize;
 
 use crate::filters;
 use crate::models::{Availability, AvailabilityChangeset, Role, User};
-use crate::utils::DateTimeFormat::{DayMonth, DayMonthYear, DayMonthYearHourMinute};
+use crate::utils::DateTimeFormat::{DayMonth, DayMonthYear, DayMonthYearHourMinute, HourMinute};
 
 pub mod delete;
 pub mod get_new;
diff --git a/web/src/filters.rs b/web/src/filters.rs
index c573273a..15b60b0b 100644
--- a/web/src/filters.rs
+++ b/web/src/filters.rs
@@ -2,6 +2,7 @@ use std::fmt::Display;
 
 use chrono::{NaiveDate, NaiveDateTime, NaiveTime};
 use maud::html;
+use tracing::trace;
 
 use crate::{models::UserFunction, utils::DateTimeFormat};
 
@@ -74,13 +75,22 @@ pub fn show_tree(f: &UserFunction) -> askama::Result<String> {
 }
 
 pub fn fmt_date(v: &NaiveDate, format: DateTimeFormat) -> askama::Result<String> {
-    Ok(v.format(format.into()).to_string())
+    let format_string = format.into();
+    trace!(format=format_string, "formatting naivedate into string with format");
+
+    Ok(v.format(format_string).to_string())
 }
 
 pub fn fmt_datetime(v: &NaiveDateTime, format: DateTimeFormat) -> askama::Result<String> {
-    Ok(v.format(format.into()).to_string())
+    let format_string = format.into();
+    trace!(format=format_string, "formatting naivedatetime into string with format");
+
+    Ok(v.format(format_string).to_string())
 }
 
 pub fn fmt_time(v: &NaiveTime, format: DateTimeFormat) -> askama::Result<String> {
-    Ok(v.format(format.into()).to_string())
+    let format_string = format.into();
+    trace!(format=format_string, "formatting naivetime into string with format");
+
+    Ok(v.format(format_string).to_string())
 }
diff --git a/web/templates/availability/new_or_edit.html b/web/templates/availability/new_or_edit.html
index 90cdea46..bf687ce6 100644
--- a/web/templates/availability/new_or_edit.html
+++ b/web/templates/availability/new_or_edit.html
@@ -81,9 +81,9 @@
               </svg>
               {% let start_time = start.unwrap_or(NaiveTime::from_hms_opt(10, 0, 0).unwrap()) %}
               {% let end_time = start.unwrap_or(NaiveTime::from_hms_opt(20, 0, 0).unwrap()) %}
-              verfügbar von {{ date|fmt_date(DayMonth) }} <span id="st">{{ start_time|fmt_time(DayMonth) }}</span> Uhr
+              verfügbar von {{ date|fmt_date(DayMonth) }} <span id="st">{{ start_time|fmt_time(HourMinute) }}</span> Uhr
               bis <span id="ed">{{ enddate.as_ref().unwrap_or(date)|fmt_date(DayMonth) }}</span>
-              <span id="et">{{ end_time|fmt_time(DayMonth) }}</span> Uhr
+              <span id="et">{{ end_time|fmt_time(HourMinute) }}</span> Uhr
             </p>
           </div>
         </div>