Reservation Date/Time fields

Salesforce always renders Date and DateTime fields relative to the timezone of the user that is viewing them. This means GoMeddo needs some specific fields to allow for correctly inputting and outputting reservation dates and times.

Step-by-step guide

In the GoMeddo app, navigate to the Resources tab
In the Resource hierarchy, make sure that every timezone's top node (defining the timezone of itself and its children) has the correct timezone filled in in the Timezone field. Its children will automatically be given the same timezone
Now strictly follow the following matrix for inputting and outputting reservation dates and times in either the reservation's resource's timezone or the viewing user's timezone:

Input / Output	Which timezone?	Label	Field API Name	What?	Type
Input & Output on Reservation Form Input in APEX / API / FLOW	Resource local timezone	Start (local time) End (local time)	B25__StartLocal__c B25__EndLocal__c	Start/End date & time	Date/Time
Input in APEX / API / FLOW Output on record page	Current user timezone	User Start Datetime User End Datetime	B25__Start__c B25__End__c	Start/End date & time	Date/Time
Output on record page	Resource local timezone	Local Start Date Local End Date	B25__Start_Date__c B25__End_Date__c	Start/End date	Date
Output on record page	Resource local timezone	Local Start Time Local End Time	B25__Local_Start_Time__c B25__Local_End_Time__c	Start/End time	Text(5)
Output on record page	Resource local timezone	Local Start Datetime Local End Datetime	B25__Start_Local_DateTime__c B25__End_Local_DateTime__c	Start/End date & time	Formula(Text)

Example

The following screenshots display a real-world example based on a resource in London (GMT) and a user in Amsterdam (GMT+1)

Timezones

The calendar displays resources in its own timezone. Even if there are two resources shown in the calendar with different timezones, this will display the reservations in these resources in respect of that resource's timezone. The calendar does not automatically adjust itself based on the user-selected Locale and Timezone.

For Example, if you have two resources, Resource One in (GMT+01:00) Central European Standard Time (Europe/Amsterdam) and Resource Two in (GMT+00:00) Greenwich Mean Time (Europe/London) dragging a reservation with start-time 15:00 from Resource One to Resource Two will result in the local time not being changed, the GMT times will be changed.

The same reservation is shown twice in two resources with different timezones:

Resource One (GMT+01:00)

Resource Two (GMT+00:00)