diff --git a/config.yaml b/config.yaml
index 47a2dfcf..18b84aad 100644
--- a/config.yaml
+++ b/config.yaml
@@ -11,8 +11,10 @@ DAY_SEGMENTS: &day_segments
   [daily, morning, afternoon, evening, night]
 
 # Global timezone
+# Use codes from https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
+# Double check your code, for example EST is not US Eastern Time.
 TIMEZONE: &timezone
-  EST
+  America/New_York
 
 # Download data config
 DOWNLOAD_DATASET:
diff --git a/src/data/readable_datetime.R b/src/data/readable_datetime.R
index ea5b08b7..323c054b 100644
--- a/src/data/readable_datetime.R
+++ b/src/data/readable_datetime.R
@@ -28,7 +28,7 @@ if(!is.null(timezone_periods)){
                         timezone = as.character(timezone)) %>%
                 rowwise() %>%
                 mutate(utc_date_time = as.POSIXct(timestamp/1000, origin="1970-01-01", tz="UTC"),
-                        local_date_time = format(utc_date_time, tz = timezone, usetz = F))
+                        local_date_time = format(utc_date_time, tz = timezone, usetz = T))
     output <- split_local_date_time(output)
     write.csv(output, sensor_output)
 } else if(!is.null(fixed_timezone)){