关于DHTMLX Scheduler start_hour：含分钟与PM设置的技术咨询

Hey there! Let's tackle your two DHTMLX questions one by one:

In DHTMLX Scheduler, the default start_hour uses whole-hour increments, but setting a minute-specific start time is straightforward. Here are two reliable approaches:

• Use a float value for start_hour:
  Convert your desired time into a decimal where 0.5 equals 30 minutes, 0.25 equals 15 minutes, etc. For example, to set a 9:30 AM start time:

  scheduler.config.start_hour = 9.5; // Maps directly to 9:30 AM
  

• Sync with time grid settings for proper display:
  If you want the timeline to show minute markers alongside your custom start time, pair the float start_hour with time_step (controls the interval between grid lines) and hour_date (defines how time is displayed):

  scheduler.config.start_hour = 9.5;
  scheduler.config.time_step = 30; // Creates 30-minute intervals on the grid
  scheduler.config.hour_date = "%H:%i"; // Displays time as 09:30 instead of just 9
  

  This setup ensures your minute-specific start time is both applied correctly and visible in the UI, matching the intent behind your Start_hour_image reference.

DHTMLX uses 24-hour format under the hood for start_hour, so configuring a PM start time just requires using the correct 24-hour value. Plus, you can tweak the display format to show AM/PM labels for clarity:

• Set the 24-hour equivalent for your PM time:
  For a 2:30 PM start time, use 14.5 (since 2 PM is 14:00 in 24-hour time, plus 0.5 for 30 minutes):

  scheduler.config.start_hour = 14.5; // Equals 2:30 PM
  

• Enable 12-hour format with AM/PM labels:
  To make the PM indicator visible in the UI, update your time format configurations to use 12-hour notation and include the AM/PM marker:

  scheduler.config.start_hour = 14.5;
  scheduler.config.time_step = 30;
  scheduler.config.hour_date = "%h:%i %A"; // Displays as 02:30 PM
  scheduler.config.full_date = "%m/%d/%Y %h:%i %A"; // Applies to event details too
  

  Now your scheduler will start at the desired PM time, and all time displays will clearly show the PM label, fulfilling your Start_hour_with_pm requirement.

内容的提问来源于stack exchange，提问作者Sameer Tariq