diff --git a/crates/eww/src/config/inbuilt.rs b/crates/eww/src/config/inbuilt.rs
index bca0f22..13cf1e6 100644
--- a/crates/eww/src/config/inbuilt.rs
+++ b/crates/eww/src/config/inbuilt.rs
@@ -1,4 +1,4 @@
-use std::{collections::HashMap, time::Duration};
+use std::collections::HashMap;
 
 use simplexpr::{dynval::DynVal, SimplExpr};
 use yuck::config::{
@@ -10,7 +10,7 @@ use crate::{config::system_stats::*, paths::EwwPaths};
 use eww_shared_util::VarName;
 
 macro_rules! define_builtin_vars {
-    ($($name:literal => $fun:expr => $interval:expr),*$(,)?) => {
+    ($($name:literal [$interval:literal] => $fun:expr),*$(,)?) => {
         pub static INBUILT_VAR_NAMES: &[&'static str] = &[$($name),*];
         pub fn get_inbuilt_vars() -> HashMap<VarName, ScriptVarDefinition> {
             maplit::hashmap! {
@@ -20,7 +20,7 @@ macro_rules! define_builtin_vars {
                     run_while_expr: SimplExpr::Literal(DynVal::from(true)),
                     command: VarSource::Function($fun),
                     initial_value: None,
-                    interval: $interval,
+                    interval: std::time::Duration::from_secs($interval),
                     name_span: eww_shared_util::span::Span::DUMMY,
                 })
                 ),*
@@ -32,19 +32,19 @@ macro_rules! define_builtin_vars {
 define_builtin_vars! {
     // @desc EWW_TEMPS - Heat of the components in Celcius
     // @prop { <name>: temperature }
-    "EWW_TEMPS" => || Ok(DynVal::from(get_temperatures())) => Duration::new(2, 0),
+    "EWW_TEMPS" [2] => || Ok(DynVal::from(get_temperatures())),
 
     // @desc EWW_RAM - Information on ram and swap usage in kB.
     // @prop { total_mem, free_mem, total_swap, free_swap, available_mem, used_mem, used_mem_perc }
-    "EWW_RAM" => || Ok(DynVal::from(get_ram())) => Duration::new(2, 0),
+    "EWW_RAM" [2] => || Ok(DynVal::from(get_ram())),
 
     // @desc EWW_DISK - Information on on all mounted partitions (Might report inaccurately on some filesystems, like btrfs and zfs) Example: `{EWW_DISK["/"]}`
     // @prop { <mount_point>: { name, total, free, used, used_perc } }
-    "EWW_DISK" => || Ok(DynVal::from(get_disks())) => Duration::new(2, 0),
+    "EWW_DISK" [2] => || Ok(DynVal::from(get_disks())),
 
     // @desc EWW_BATTERY - Battery capacity in procent of the main battery
     // @prop { <name>: { capacity, status } }
-    "EWW_BATTERY" => || Ok(DynVal::from(
+    "EWW_BATTERY" [2] => || Ok(DynVal::from(
         match get_battery_capacity() {
             Err(e) => {
                 log::error!("Couldn't get the battery capacity: {:?}", e);
@@ -52,18 +52,18 @@ define_builtin_vars! {
             }
             Ok(o) => o,
         }
-    )) => Duration::new(2, 0),
+    )),
 
     // @desc EWW_CPU - Information on the CPU cores: frequency and usage (No MacOS support)
     // @prop { cores: [{ core, freq, usage }], avg }
-    "EWW_CPU" => || Ok(DynVal::from(get_cpus())) => Duration::new(2, 0),
+    "EWW_CPU" [2] => || Ok(DynVal::from(get_cpus())) ,
 
     // @desc EWW_NET - Bytes up/down on all interfaces
     // @prop { <name>: { up, down } }
-    "EWW_NET" => || Ok(DynVal::from(net())) => Duration::new(2, 0),
+    "EWW_NET" [2] => || Ok(DynVal::from(net())) ,
 
-    // @desc EWW_TIME - Information on current time in UNIX timestamp
-    "EWW_TIME" => || Ok(DynVal::from(get_time())) => Duration::new(1, 0),
+    // @desc EWW_TIME - the current UNIX timestamp
+    "EWW_TIME" [1] => || Ok(DynVal::from(get_time())) ,
 }
 
 macro_rules! define_magic_constants {
diff --git a/crates/eww/src/config/system_stats.rs b/crates/eww/src/config/system_stats.rs
index 37e56cf..46f201b 100644
--- a/crates/eww/src/config/system_stats.rs
+++ b/crates/eww/src/config/system_stats.rs
@@ -179,5 +179,5 @@ pub fn net() -> String {
 }
 
 pub fn get_time() -> String {
-    format!("{}", chrono::offset::Utc::now().format("%s"))
+    chrono::offset::Utc::now().timestamp().to_string()
 }
diff --git a/crates/simplexpr/src/eval.rs b/crates/simplexpr/src/eval.rs
index 490119d..c0b029d 100644
--- a/crates/simplexpr/src/eval.rs
+++ b/crates/simplexpr/src/eval.rs
@@ -57,11 +57,11 @@ pub enum EvalError {
     #[error(transparent)]
     JaqParseError(JaqParseError),
 
-    #[error("{1}")]
-    Spanned(Span, Box<EvalError>),
-
     #[error("Error parsing date: {0}")]
     ChronoError(String),
+
+    #[error("{1}")]
+    Spanned(Span, Box<EvalError>),
 }
 
 static_assertions::assert_impl_all!(EvalError: Send, Sync);
@@ -382,7 +382,7 @@ fn call_expr_function(name: &str, args: Vec<DynVal>) -> Result<DynVal, EvalError
             _ => Err(EvalError::WrongArgCount(name.to_string())),
         },
         "formattime" => match args.as_slice() {
-            [timestamp, timezone, format] => {
+            [timestamp, format, timezone] => {
                 let timezone = match chrono_tz::Tz::from_str(&timezone.as_string()?) {
                     Ok(x) => x,
                     Err(_) => return Err(EvalError::ChronoError("Invalid timezone".to_string())),
diff --git a/docs/src/expression_language.md b/docs/src/expression_language.md
index d804563..57e15ea 100644
--- a/docs/src/expression_language.md
+++ b/docs/src/expression_language.md
@@ -47,7 +47,7 @@ Supported currently are the following features:
 	- `arraylength(value)`: Gets the length of the array
 	- `objectlength(value)`: Gets the amount of entries in the object
 	- `jq(value, jq_filter_string)`: run a [jq](https://stedolan.github.io/jq/manual/) style command on a json value. (Uses [jaq](https://crates.io/crates/jaq) internally).
-    - `formattime(unix_timestamp, timezone, format_str)`: Gets the time in a given format from UNIX timestamp.
+    - `formattime(unix_timestamp, format_str, timezone)`: Gets the time in a given format from UNIX timestamp.
       Check [chrono's documentation](https://docs.rs/chrono/latest/chrono/format/strftime/index.html) for more
       information about format string and [chrono-tz's documentation](https://docs.rs/chrono-tz/latest/chrono_tz/enum.Tz.html)
       for available time zones.