Exception: TZInfo::AmbiguousTime

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AmbiguousTime is raised to indicate that a specified local time has more than one possible equivalent UTC time. Such ambiguities arise when the clocks are set back in a time zone, most commonly during the repeated hour when transitioning from daylight savings time to standard time.

AmbiguousTime is raised by Timezone#local_datetime, Timezone#local_time, Timezone#local_timestamp, Timezone#local_to_utc and Timezone#period_for_local when using an ambiguous time and not specifying how to resolve the ambiguity.