diff --git a/src/tww/tww.py b/src/tww/tww.py
index 527a127..30ab393 100644
--- a/src/tww/tww.py
+++ b/src/tww/tww.py
@@ -79,6 +79,9 @@ def normalize_words_to_number(query):
 
 pytz_all_timezones = pytz.all_timezones
 NORMALIZED_TZ_DICT = dict(zip([tz.lower() for tz in pytz_all_timezones], pytz_all_timezones))
+TZ_OFFSETS = defaultdict(list)
+TZ_OFFSETS_DST = defaultdict(list)
+TZ_OFFSETS_NODST = defaultdict(list)
 
 NORMALIZED_TZ_ABBR = defaultdict(set)
 TZ_ABBRS_REVERSE = defaultdict(set)
@@ -89,6 +92,10 @@ for x_tz in pytz_all_timezones:
     NORMALIZED_TZ_ABBR[nodst_tzname.lower()].add(x_tz)
     TZ_ABBRS_REVERSE[x_tz].add(dst_tzname)
     TZ_ABBRS_REVERSE[x_tz].add(nodst_tzname)
+    tz_offset = pytz.timezone(x_tz).localize(datetime.now()).strftime('%z')
+    TZ_OFFSETS[tz_offset].append(x_tz)
+    TZ_OFFSETS_DST[tz_offset].append(dst_tzname)
+    TZ_OFFSETS_NODST[tz_offset].append(nodst_tzname)
 
 
 def timezone_to_normal(query):