Symbol 5881 from IEC 60417 - Title/Meaning: Summer time Function/description: To identify the function being in summer time or this function being in operation.
Additional information: 
Published in: Amendment 2, 2002,3C/695/FDIS,3C/595/CDV,3C/496/CD,3C(Treviso/Secretariat)10
Own work using: iso.org/obp/graphics/grs/8d8fbf84-672a-4ec2-9a4f-7409f6cf448a 200.png
Vectorization:  Mrmw