diff --git a/crates/rbuilder/src/live_builder/mod.rs b/crates/rbuilder/src/live_builder/mod.rs
index 34d7b08c..6e6decb7 100644
--- a/crates/rbuilder/src/live_builder/mod.rs
+++ b/crates/rbuilder/src/live_builder/mod.rs
@@ -23,7 +23,8 @@ use crate::{
     provider::StateProviderFactory,
     telemetry::{inc_active_slots, mark_building_started, reset_histogram_metrics},
     utils::{
-        error_storage::spawn_error_storage_writer, provider_head_state::ProviderHeadState, Signer,
+        error_storage::spawn_error_storage_writer, format_offset_datetime_rfc3339,
+        provider_head_state::ProviderHeadState, Signer,
     },
 };
 use alloy_consensus::Header;
@@ -223,9 +224,8 @@ where
                     slot = payload.slot(),
                     block = payload.block(),
             payload_id = payload.payload_id,
-                    ?current_time,
-                    payload_timestamp = ?payload.timestamp(),
-                    ?time_to_slot,
+                    payload_timestamp = format_offset_datetime_rfc3339(&payload.timestamp()),
+                    time_to_slot_s = time_to_slot.as_seconds_f64(),
                     parent_hash = ?payload.parent_block_hash(),
                     provider_head_state = ?ProviderHeadState::new(&self.provider),
                     "Received payload, time till slot timestamp",
diff --git a/crates/rbuilder/src/live_builder/payload_events/mod.rs b/crates/rbuilder/src/live_builder/payload_events/mod.rs
index b386ed8b..011c5526 100644
--- a/crates/rbuilder/src/live_builder/payload_events/mod.rs
+++ b/crates/rbuilder/src/live_builder/payload_events/mod.rs
@@ -15,7 +15,7 @@ use crate::{
         SlotSource,
     },
     primitives::mev_boost::{MevBoostRelayID, MevBoostRelaySlotInfoProvider},
-    utils::timestamp_ms_to_offset_datetime,
+    utils::{format_offset_datetime_rfc3339, timestamp_ms_to_offset_datetime},
 };
 use alloy_eips::{merge::SLOT_DURATION, BlockNumHash};
 use alloy_primitives::{utils::format_ether, Address, B256, U256};
@@ -162,7 +162,7 @@ impl MevBoostSlotDataGenerator {
                     slot,
                     block,
                     ?parent_hash,
-                    ?timestamp,
+                    payload_timestamp = format_offset_datetime_rfc3339(&timestamp),
                     "Payload attributes received from CL client"
                 );
 
diff --git a/crates/rbuilder/src/utils/mod.rs b/crates/rbuilder/src/utils/mod.rs
index bb0a7c32..7f44a078 100644
--- a/crates/rbuilder/src/utils/mod.rs
+++ b/crates/rbuilder/src/utils/mod.rs
@@ -33,7 +33,7 @@ use reth_chainspec::ChainSpec;
 use reth_evm_ethereum::revm_spec_by_timestamp_and_block_number;
 use revm_primitives::{CfgEnv, CfgEnvWithHandlerCfg};
 pub use test_data_generator::TestDataGenerator;
-use time::OffsetDateTime;
+use time::{format_description::well_known::Rfc3339, OffsetDateTime};
 pub use tx_signer::Signer;
 
 /// de/serializes U256 as decimal value (U256 serde default is hexa). Needed to interact with some JSONs (eg:ProposerPayloadDelivered in relay provider API)
@@ -200,6 +200,12 @@ pub fn extract_onchain_block_txs(
     Ok(result)
 }
 
+pub fn format_offset_datetime_rfc3339(datetime: &OffsetDateTime) -> String {
+    datetime
+        .format(&Rfc3339)
+        .expect("failed to format datetime")
+}
+
 #[cfg(test)]
 mod test {
     use super::*;