CEST
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CEST or cest may refer to:
- Central European Summer Time (UTC+2), daylight saving time observed in the central European time zone
 - Cognitive-Experiential Self-Theory
 - Chemical Exchange Saturation Transfer, a subset of Magnetization transfer in MRI
 - Cest, a woman's girdle
 - Cest or Cesti, informal or plural for Cestus, an ancient battle glove
 - The "Check Employment Status for Tax" online tool used for assessing contractors' employment status for IR35 purposes under UK tax law