further timezone fixes

@@ -26,7 +26,7 @@ ${question_id}   0
   [Arguments]  @{ARGUMENTS}
   [Documentation]  Відкрити брaвзер, створити обєкт api wrapper, тощо
   ${api_wrapper}=  prepare_api_wrapper  ${USERS.users['${ARGUMENTS[0]}'].api_key}  ${API_HOST_URL}    ${api_version}
-  ${creation_date} =   get_date
+  ${creation_date} =   get_now
   Set To Dictionary  ${USERS.users['${ARGUMENTS[0]}']}   creation_date   ${creation_date}
   Set To Dictionary  ${USERS.users['${ARGUMENTS[0]}']}   client  ${api_wrapper}
   Log Variables

@@ -20,16 +20,16 @@ from .initial_data import (
     auction_bid, prom_test_tender_data, create_fake_doc
 )
 
-TIMEZONE = timezone('Europe/Kiev')
 
+TZ = timezone(os.environ['TZ'] if 'TZ' in os.environ else 'Europe/Kiev')
+
+def get_now():
+    return datetime.now(TZ)
 
 def get_file_contents(path):
     with open(path, 'r') as f:
         return unicode(f.read()) or u''
 
-def get_date():
-	return datetime.now().isoformat()
-
 def change_state(arguments):
     try:
         if arguments[0] == "shouldfail":
@@ -45,9 +45,9 @@ def compare_date(data1, data2):
     data1=parse(data1)
     data2=parse(data2)
     if data1.tzinfo is None:
-        data1 = TIMEZONE.localize(data1)
+        data1 = TZ.localize(data1)
     if data2.tzinfo is None:
-        data2 = TIMEZONE.localize(data2)
+        data2 = TZ.localize(data2)
 
     delta = (data1-data2).total_seconds()
     if abs(delta) > 60:
@@ -116,7 +116,7 @@ def run_keyword_and_ignore_keyword_definitions(name, *args):
 
 
 def set_tender_periods(tender):
-    now = datetime.now()
+    now = get_now()
     tender.data.enquiryPeriod.endDate = (now + timedelta(minutes=2)).isoformat()
     tender.data.tenderPeriod.startDate = (now + timedelta(minutes=2)).isoformat()
     tender.data.tenderPeriod.endDate = (now + timedelta(minutes=4)).isoformat()
@@ -145,7 +145,7 @@ def get_from_object(obj, attribute):
 def wait_to_date(date_stamp):
     date = parse(date_stamp)
     LOGGER.log_message(Message("date: {}".format(date.isoformat()), "INFO"))
-    now = datetime.now(tzlocal())
+    now = get_now()
     LOGGER.log_message(Message("now: {}".format(now.isoformat()), "INFO"))
     wait_seconds = (date - now).total_seconds()
     wait_seconds += 2