Today marks Siksika Day across the region. StrathmoreNow/Staff.captiontext { font-size:90%;font-style: italic;margin-right:20px; } Members of Siksika Nation and neighbouring communities across southern Alberta are gathering today to mark Siksika Day, an annual observance honouring the nation’s history, culture, and enduring sovereignty. The day carries deep historical significance, falling on the anniversary of the signing of Treaty 7 on Septemb…