def epoch(dt):
    return calendar.timegm(dt.astimezone(pytz.utc).timetuple())
Test image overlay.
dataset/ETHPy150Open brutasse/graphite-api/graphite_api/utils.py/epoch--crossover with--dataset/ETHPy150Open python-visualization/folium/tests/plugins/test_image_overlay.py/test_image_overlay