⏳🌍¹

#universal time #UT1 #time scale #earth rotation #celestial mechanics

🌍🕰️¹

#universal time #UT1 #time standard #earth rotation

🔫🏆¹

#unreal tournament #UT99 #UT1 #first-person shooter #arena shooter

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#unreal tournament #UT99 #UT1 #capture the flag #ctf