❓ Frequently Asked Questions
How do I convert UTC to CST?
Subtract 6 hours. UTC 15:00 − 6 = CST 9:00 AM. If result is negative, add 24 and it is the previous day.
What is UTC 12:00 in CST?
UTC 12:00 (noon) = CST 6:00 AM. 12 − 6 = 6 AM. UTC noon is early morning in Chicago.
What is UTC midnight in CST?
UTC 00:00 = CST 6:00 PM of the previous day. 0 − 6 = −6 = 18:00 previous day.
Where is CST used?
CST is used in central US states (Illinois, Texas, Missouri, Wisconsin, etc.), central Canada, Mexico, and some Central American countries. In the US, most of these switch to CDT (UTC-5) during summer.
Is CST the same as CDT?
No. CST (UTC-6) is winter time; CDT (UTC-5) is US summer time. CDT is 1 hour ahead of CST. To convert UTC to CDT, subtract 5 hours instead of 6.