diff --git a/src/uipanel.mjs b/src/uipanel.mjs
index 31ba53c..599b3da 100644
--- a/src/uipanel.mjs
+++ b/src/uipanel.mjs
@@ -169,12 +169,17 @@ export class UIPanel extends HandlebarsApplicationMixin(ApplicationV2) {
             if (UIPanel.#showDBTime || UIPanel.#showRadialClocks) {
                 const dbtime = Helpers.factorDragonbaneTime(this.#time)
                 dbtime.shiftName = Helpers.getDragonbaneShiftName(dbtime.shifts)
-                dbtime.textColor = context.textColor  // it's the same color for now, but could be different
+                dbtime.textColor = context.textColor // it's the same color for now, but could be different
 
                 if (UIPanel.#showDBTime) {
                     // new approach: just pass in a data object and handle layout in the template
-                    if (Helpers.showTimeOfDay) dbtime.days = null // hide days if they are already shown in time string
-                    context.dbtime = dbtime
+                    context.dbtime = foundry.utils.deepClone(dbtime)
+                    // display as 1-based
+                    context.dbtime.days += 1
+                    context.dbtime.shifts += 1
+                    context.dbtime.stretches += 1
+                    // make adjustments just to the copy, since the original is used for the graphical display
+                    if (Helpers.showTimeOfDay) context.dbtime.days = null // hide days if they are already shown in time string
                 }
 
                 if (UIPanel.#showRadialClocks) context.clocks = this.#prepareClocks(dbtime)