The city of Winchester is in the Eastern Time Zone. 1200Z is the time. What time is it in February (Central Standard Time)?

The notation UTC-6 appears in the first line of the posting (-5DT). This is the time difference between "Zulu" (Z), Greenwich Mean Time, and Coordinated Universal Time (UTC) (they all refer to the same time standard). "UTC-6" indicates that the local time is determined by subtracting 6 hours from UTC (subtract 5 hours during Daylight Savings Time).