diff --git a/Cargo.lock b/Cargo.lock
index c315e12..3c2bb40 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1092,6 +1092,7 @@ dependencies = [
  "comemo",
  "fontdb",
  "maud",
+ "time",
  "tokio",
  "typst",
  "typst-pdf",
@@ -1288,6 +1289,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "num_threads"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c7398b9c8b70908f6371f47ed36737907c87c52af34c268fed0bf0ceb92ead9"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "numerals"
 version = "0.1.4"
@@ -2059,7 +2069,9 @@ checksum = "5dfd88e563464686c916c7e46e623e520ddc6d79fa6641390f2e3fa86e83e885"
 dependencies = [
  "deranged",
  "itoa",
+ "libc",
  "num-conv",
+ "num_threads",
  "powerfmt",
  "serde",
  "time-core",
diff --git a/Cargo.toml b/Cargo.toml
index 541957a..0525f95 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,6 +10,7 @@ clap = { version = "4.5.4", features = ["derive", "deprecated"] }
 comemo = "0.4.0"
 fontdb = "0.16.2"
 maud = { version = "0.26.0", features = ["axum"] }
+time = { version = "0.3.36", features = ["macros", "formatting", "local-offset"] }
 tokio = { version = "1.37.0", features = ["full"] }
 typst = "0.11.0"
 typst-pdf = "0.11.0"
diff --git a/src/endpoints/index.rs b/src/endpoints/index.rs
index 220cd92..290cf9a 100644
--- a/src/endpoints/index.rs
+++ b/src/endpoints/index.rs
@@ -1,8 +1,13 @@
 use maud::{html, Markup};
+use time::{macros::format_description, Date, OffsetDateTime};
 
 use crate::endpoints::page;
 
 pub async fn get() -> Markup {
+    let now = OffsetDateTime::now_local().unwrap_or_else(|_| OffsetDateTime::now_utc());
+    let month = now.date().replace_day(1).unwrap().previous_day().unwrap();
+    let month = month.format(format_description!("[year]-[month]")).unwrap();
+
     page(
         html! {
             style { (include_str!("base.css")) }
@@ -13,7 +18,7 @@ pub async fn get() -> Markup {
 
                 div #header {
                     label #l-month for="i-month" { "Monat / Jahr:" }
-                    input #i-month name="month" type="month" placeholder="2024-04" {} // TODO Fill in previous month by default
+                    input #i-month name="month" type="month" placeholder=(month) value=(month) {}
 
                     label #l-name for="i-name" { "Name, Vorname des/r Beschäftigten:" }
                     input #i-name name="name" type="text" placeholder="McStudentface, Student" {}