AWS set date to midnight

What is the best way to initialize a Date to midnight using AWS AppSync utility.

I need to know if we have something like this

  var d =  (new Date()).setUTCHours(0,0,0,0)

By using $util.time.nowEpochSeconds() , I am getting the epoch time but how do i identify the time difference that i need to add to set as midnight time

Solution

AppSync doesn't offer that capability through utils only yet and this is good feedback, I'll make sure the team sees this.

In the meantime, as a workaround, you could modify the date string to achieve what you need.

#set($time = $util.time.nowFormatted("yyyy-MM-dd/HH:mm:ss/Z"))

#set ($split = $time.split("/"))
#set ($midnight = $split[0] + " 00:00:00" + $split[2])

time: $time
midnight: $midnight
midnight epoch seconds: $util.time.parseFormattedToEpochMilliSeconds($midnight, "yyyy-MM-dd HH:mm:ssZ")

will print:

time: 2019-07-15/22:33:57/+0000
midnight: 2019-07-15 00:00:00+0000
midnight epoch seconds: 1563148800000