Everything’s tested on 2.5.0+ as of now.

Silverbullet is my note-taking app of choice.

Insert Current Date and Time in UTC with /time command

slashCommand.define {
  name = "time",
  description = "Insert current UTC date/time at the cursor",
  run = function()
    local utc = os.date("!%Y-%m-%d %H:%M:%S UTC")
    editor.insertAtCursor(utc, false, true)
  end
}

Result: 2026-03-23 21:10:26 UTC