diff --git a/rust/Cargo.toml b/rust/Cargo.toml
index 99b8b27..5993509 100644
--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -24,7 +24,7 @@ debug = false
 overflow-checks = true
 panic = "abort"
 incremental = true
-opt-level = "z"
+opt-level = 3
 
 
 [profile.release]
@@ -35,7 +35,7 @@ debug = false
 overflow-checks = true
 panic = "abort"
 incremental = true
-opt-level = "z"
+opt-level = 3
 
 
 [package.metadata.espflash]
diff --git a/rust/src/hal/esp.rs b/rust/src/hal/esp.rs
index 3643755..6d239de 100644
--- a/rust/src/hal/esp.rs
+++ b/rust/src/hal/esp.rs
@@ -13,7 +13,7 @@ use alloc::{
 use core::marker::PhantomData;
 use core::net::IpAddr;
 use core::str::FromStr;
-use embassy_time::Timer;
+use embassy_time::{Instant, Timer};
 
 #[link_section = ".rtc.data"]
 static mut LAST_WATERING_TIMESTAMP: [i64; PLANT_COUNT] = [0; PLANT_COUNT];
@@ -53,6 +53,7 @@ pub struct MqttClient<'a> {
 pub struct Esp<'a> {
     pub(crate) mqtt_client: Option<MqttClient<'a>>,
     pub(crate) dummy: PhantomData<&'a ()>,
+    pub(crate) wall_clock_offset: u64
     //pub(crate) wifi_driver: EspWifi<'a>,
     //pub(crate) boot_button: PinDriver<'a, esp_idf_hal::gpio::AnyIOPin, esp_idf_hal::gpio::Input>,
 }
@@ -87,13 +88,9 @@ impl Esp<'_> {
         //self.time()
         todo!();
     }
-    pub(crate) fn time(&mut self) -> anyhow::Result<DateTime<Utc>> {
-        bail!("todo");
-        // let time = EspSystemTime {}.now().as_millis();
-        // let smaller_time = time as i64;
-        // let local_time = DateTime::from_timestamp_millis(smaller_time)
-        //     .ok_or(anyhow!("could not convert timestamp"))?;
-        // anyhow::Ok(local_time)
+    pub(crate) fn time(&mut self) -> DateTime<Utc> {
+        let wall_clock = Instant::now().as_millis() + self.wall_clock_offset;
+        DateTime::from_timestamp_millis(wall_clock as i64).unwrap()
     }
 
     pub(crate) async fn wifi_scan(&mut self) -> anyhow::Result<Vec<AccessPointInfo>> {
diff --git a/rust/src/hal/mod.rs b/rust/src/hal/mod.rs
index 22370c8..370f8bd 100644
--- a/rust/src/hal/mod.rs
+++ b/rust/src/hal/mod.rs
@@ -212,7 +212,8 @@ impl PlantHal {
         //
         let mut esp = Esp {
              mqtt_client: None,
-            dummy: PhantomData::default()
+            dummy: PhantomData::default(),
+            wall_clock_offset : 0
         //     wifi_driver,
         //     boot_button
          };
diff --git a/rust/src/main.rs b/rust/src/main.rs
index c14e4b5..1b83dc1 100644
--- a/rust/src/main.rs
+++ b/rust/src/main.rs
@@ -182,12 +182,8 @@ async fn safe_main() -> anyhow::Result<()> {
         .or_else(|err| {
             info!("rtc module error: {:?}", err);
             board.board_hal.general_fault(true);
-            board.board_hal.get_esp().time()
-        })
-        .map_err(|err| -> Result<(), _> {
-            bail!("time error {}", err);
-        })
-        .unwrap();
+            anyhow::Ok(board.board_hal.get_esp().time())
+        })?;
 
     //check if we know the time current > 2020 (plausibility checks, this code is newer than 2020)
     if cur.year() < 2020 {