Use UTC where appropriate in python files

4 files changed, 6 insertions, 6 deletions

diff --git a/build/mobile/b2gautomation.py b/build/mobile/b2gautomation.py
index d49a5f1ac..d73edd419 100644
--- a/build/mobile/b2gautomation.py
+++ b/build/mobile/b2gautomation.py
@@ -241,8 +241,8 @@ class B2GRemoteAutomation(Automation):
                 self._devicemanager.killProcess('/system/b2g/b2g', sig=signal.SIGABRT)
 
                 timeout = 10 # seconds
-                starttime = datetime.datetime.now()
-                while datetime.datetime.now() - starttime < datetime.timedelta(seconds=timeout):
+                starttime = datetime.datetime.utcnow()
+                while datetime.datetime.utcnow() - starttime < datetime.timedelta(seconds=timeout):
                     if not self._devicemanager.processExist('/system/b2g/b2g'):
                         break
                     time.sleep(1)
diff --git a/build/mobile/remoteautomation.py b/build/mobile/remoteautomation.py
index 7b2fad6cb..1358e0dfe 100644
--- a/build/mobile/remoteautomation.py
+++ b/build/mobile/remoteautomation.py
@@ -387,9 +387,9 @@ class RemoteAutomation(Automation):
                 # Get log updates on each interval, but if it is taking
                 # too long, only do it every 60 seconds
                 if (not slowLog) or (timer % 60 == 0):
-                    startRead = datetime.datetime.now()
+                    startRead = datetime.datetime.utcnow()
                     hasOutput = self.read_stdout()
-                    if (datetime.datetime.now() - startRead) > datetime.timedelta(seconds=5):
+                    if (datetime.datetime.utcnow() - startRead) > datetime.timedelta(seconds=5):
                         slowLog = True
                     if hasOutput:
                         noOutputTimer = 0
diff --git a/build/release/info.py b/build/release/info.py
index 9f42edd5a..7e7a30bce 100644
--- a/build/release/info.py
+++ b/build/release/info.py
@@ -129,7 +129,7 @@ def getReleaseTag(tag):
 def generateRelbranchName(version, prefix='GECKO'):
     return '%s%s_%s_RELBRANCH' % (
         prefix, version.replace('.', ''),
-        datetime.now().strftime('%Y%m%d%H'))
+        datetime.utcnow().strftime('%Y%m%d%H'))
 
 
 def getReleaseName(product, version, buildNumber):
diff --git a/build/variables.py b/build/variables.py
index 7761e6096..de0903af2 100644
--- a/build/variables.py
+++ b/build/variables.py
@@ -17,7 +17,7 @@ def buildid_header(output):
         print('Ignoring invalid MOZ_BUILD_DATE: %s' % buildid, file=sys.stderr)
         buildid = None
     if not buildid:
-        buildid = datetime.now().strftime('%Y%m%d%H%M%S')
+        buildid = datetime.utcnow().strftime('%Y%m%d%H%M%S')
     output.write("#define MOZ_BUILDID %s\n" % buildid)