diff --git a/src/apis/emscripten/mod.rs b/src/apis/emscripten/mod.rs
index 88dca5edf..b0495743a 100644
--- a/src/apis/emscripten/mod.rs
+++ b/src/apis/emscripten/mod.rs
@@ -290,6 +290,11 @@ pub fn generate_emscripten_env<'a, 'b>() -> ImportObject<&'a str, &'b str> {
         "_gettimeofday",
         ImportValue::Func(time::_gettimeofday as _),
     );
+    import_object.set(
+        "env",
+        "_clock_gettime",
+        ImportValue::Func(time::_clock_gettime as _),
+    );
     mock_external!(import_object, _waitpid);
     mock_external!(import_object, _utimes);
     mock_external!(import_object, _usleep);
@@ -324,7 +329,7 @@ pub fn generate_emscripten_env<'a, 'b>() -> ImportObject<&'a str, &'b str> {
     mock_external!(import_object, _exit);
     mock_external!(import_object, _execve);
     mock_external!(import_object, _endgrent);
-    mock_external!(import_object, _clock_gettime);
+    // mock_external!(import_object, _clock_gettime);
     mock_external!(import_object, ___syscall97);
     mock_external!(import_object, ___syscall91);
     mock_external!(import_object, ___syscall85);
diff --git a/src/apis/emscripten/time.rs b/src/apis/emscripten/time.rs
new file mode 100644
index 000000000..85c9d7519
--- /dev/null
+++ b/src/apis/emscripten/time.rs
@@ -0,0 +1,32 @@
+use libc::{gettimeofday, timeval, c_int, clock_gettime, clockid_t, timespec};
+use std::ptr;
+
+use crate::webassembly::Instance;
+
+/// emscripten: _gettimeofday
+pub extern "C" fn _gettimeofday(timeval_ptr_offset: c_int, tz_offset: c_int, instance: &mut Instance) -> c_int {
+    debug!("emscripten::_gettimeofday {}", timeval_ptr_offset);
+
+    unsafe {
+        let mut timeval_value = *(instance.memory_offset_addr(0, timeval_ptr_offset as _) as *mut timeval);
+        // We skip the timezone for now
+        let mut tz = ptr::null_mut();
+        debug!("emscripten::_gettimeofday(initial) {} {}", (timeval_value).tv_sec, (timeval_value).tv_usec);
+
+        let returned = gettimeofday(&mut timeval_value, tz);
+        debug!("emscripten::_gettimeofday(filled) {} {}", (timeval_value).tv_sec, (timeval_value).tv_usec);
+        returned
+    }
+}
+
+/// emscripten: _clock_gettime
+pub extern "C" fn _clock_gettime(clk_id: clockid_t, tp_offset: c_int, instance: &mut Instance) -> c_int {
+    debug!("emscripten::_clock_gettime {} {}", clk_id, tp_offset);
+
+    unsafe {
+        let mut tp = instance.memory_offset_addr(0, tp_offset as _) as *mut timespec;
+        let returned = clock_gettime(clk_id, tp);
+        debug!("emscripten::clock_gettime(filled) {} {}", (*tp).tv_sec, (*tp).tv_nsec);
+        returned
+    }
+}