Correcting details on Holyhead Mountain

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OLD DATA	CORRECTED DATA (fill only the boxes that need correction, leave all others empty)
Name of the mountain
Holyhead Mountain
Coordinates
Lat: 53.313	Lat:
Lon: 355.324	Lon:
Belongs to mountain range (optional)
Cambrian Mountains
And to subrange (optional)
Snowdonia
Peak is located in the country
United Kingdom
Elevation
220 m	m
Timezone (optional)
GMT 0.0h	GMT + h (use "-" for negative timezones, as in the US)
Best months to climb

Convenient center

Difficulty

Description