time = -12
while time != 15:
if time > -1:
print(f"UTC+{time}:00")
else:
print(f"UTC{time}:00")
if time in [-9, -3, 3, 4, 5, 6, 9, 10, 11]:
if time > -1:
print(f"UTC+{time}:30")
else:
print(f"UTC{time}:30")
if time in [5, 12]:
print(f"UTC+{time}:45")
time = time + 1
