2.2.67 [RFC5545] Section 3.8.2.2, Date-Time End

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V0120:

The specification states that the default value type for DTEND is DATE-TIME, but it can be set to a DATE type.

Microsoft Office Outlook 2007, Microsoft Outlook 2010, Microsoft Outlook 2013, Microsoft Outlook 2016, Microsoft Outlook 2019

Outlook can export DTEND as DATE-TIME or DATE. On import, it can import value types of DATE-TIME or DATE. If the value cannot be parsed as either a DATE-TIME or DATE, then the property is ignored.

V0223:

The specification states that the value type of this property MUST be the same as the DTSTART property.

Office Outlook 2007, Outlook 2010, Outlook 2013, Outlook 2016, Outlook 2019

Within a given VEVENT component, Outlook exports DTSTART and DTEND as the same value data type in the same format. On import, Outlook can import different value data types and formats for DTSTART and DTEND.

Note: Outlook only supports floating time in the context of all-day appointments, which have a floating start time that occurs at midnight on one day, and a floating end time that occurs at midnight of another day. If a VEVENT has a floating DTSTART or DTEND, but is not an all-day appointment, the floating time is converted to local time in the user's time zone.

V0121:

The specification states that non-standard, value data type, and time-zone identifier property parameters can be specified on the DTEND property.

Office Outlook 2007, Outlook 2010, Outlook 2013, Outlook 2016, Outlook 2019

On export, Outlook exports the VALUE parameter if DTEND is a DATE. Outlook exports the TZID parameter if the DTEND is not a UTC or floating time.

On import, Outlook ignores all parameters on DTEND except TZID.

V0122:

The specification states that the DTEND property can be specified within VEVENT or VFREEBUSY components.

Office Outlook 2007, Outlook 2010, Outlook 2013, Outlook 2016, Outlook 2019

Outlook only exports the DTEND property on VEVENT components. On import, any instances of DTEND outside of a VEVENT component are ignored.

V0123:

The specification states that on VEVENT components, the value of DTEND must be later than the value of DTSTART.

Office Outlook 2007, Outlook 2010, Outlook 2013, Outlook 2016, Outlook 2019

On import, Outlook can import VEVENT components that have equal values for DTEND and DTSTART. If DTEND is earlier than DTSTART, Outlook swaps the values on import.

See section 2.1.5 for export behavior.