Personal schedules and events

Bedtime Consistency and Social Jet-Lag Calculator

Compare weekday and weekend midsleep timing.

PrivacyRuns in your browser
OutputAnalytics dashboard
CostFree to use
Analytics dashboard

Enter your details

Adjust the planning assumptions below.

Calculations stay in this browser. Saved inputs and recent results use local browser storage until you clear them.

◷
Your schedule will appear here

Results update after calculation and include a visual timeline, calendar, or dashboard.

Purpose and scope

What this dashboard measures

Compare weekday and weekend midsleep timing.

Weekday bedtime, Weekday wake time, Weekend bedtime, Weekend wake time, and Weekdays in comparison feed the breakdown values beneath the Bedtime Consistency and Social Jet-Lag Calculator headline; Save Weekdays in comparison in its entered unit for comparison.

InterfaceAnalytics dashboard
CategoryPersonal schedules and events
Review focusHeadline and units

Instructions

How to use this calculator

Confirm Weekday bedtime and Weekday wake time from the Bedtime Consistency and Social Jet-Lag Calculator reference data, then save Weekend bedtime, Weekend wake time, and Weekdays in comparison in their recorded units.

  1. Confirm Weekday bedtime and Weekday wake time from one Bedtime Consistency and Social Jet-Lag Calculator reporting period.
  2. Confirm Weekend bedtime, Weekend wake time, and Weekdays in comparison without changing the Weekdays in comparison unit.
  3. Create the Bedtime Consistency and Social Jet-Lag Calculator and evaluate its headline with breakdown values.
  4. Isolate Weekdays in comparison in a second Bedtime Consistency and Social Jet-Lag Calculator run to identify any boundary or rounding effect.

Interpretation

Interpreting the headline metric

The metric compares timing and does not measure sleep quality, debt, or circadian phase directly.

Trace Weekday bedtime, Weekday wake time, and Weekend bedtime beside the Bedtime Consistency and Social Jet-Lag Calculator headline; Weekdays in comparison reveals rounding across the breakdown values.

Calculation

Method used

Midsleep is calculated for weekday and weekend intervals and their circular clock difference is reported.

Social jet lag = shortest circular clock difference between weekday and weekend midsleep.

The Bedtime Consistency and Social Jet-Lag Calculator evaluates Weekday bedtime, Weekday wake time, and Weekend bedtime separately; save Weekdays in comparison visible outside any percentage, rate, or total.

Calculation method last reviewed: June 21, 2026.

Worked scenario

Example calculation

Example: A weekday midsleep of 02:30 and weekend midsleep of 04:30 produce two hours of modeled social jet lag.

Evaluate Weekdays in comparison with the Bedtime Consistency and Social Jet-Lag Calculator breakdown values before judging the Weekdays in comparison headline scale or units.

Visual audit

Reading the supporting metrics

The Bedtime Consistency and Social Jet-Lag Calculator dashboard places breakdown values beside Weekday bedtime, Weekday wake time, Weekend bedtime, Weekend wake time, and Weekdays in comparison. Trace Weekdays in comparison in its original unit before accepting the breakdown values or headline status.

Boundaries

Important edge cases and limitations

Work shifts, naps, sleep latency, alarms, chronotype, and sleep quality are excluded.

Replace Weekdays in comparison in the Bedtime Consistency and Social Jet-Lag Calculator before reading the breakdown values or headline.

Input audit

Checklist for this calculation

  • Trace the Bedtime Consistency and Social Jet-Lag Calculator period and Weekday bedtime and Weekday wake time units.
  • Evaluate Weekdays in comparison with the Bedtime Consistency and Social Jet-Lag Calculator breakdown values.
  • Create a fresh Bedtime Consistency and Social Jet-Lag Calculator after any Weekdays in comparison replace.
  • Save Weekend bedtime, Weekend wake time, and Weekdays in comparison beside the Bedtime Consistency and Social Jet-Lag Calculator; include Weekdays in comparison in any saved or shared record.

Practical use

Recommended workflow

Use several representative weeks and separate unusual events from the normal schedule.

Questions

Frequently asked questions

Why compare midsleep instead of bedtime alone?

Midsleep reflects shifts in both bedtime and wake time within one clock-based measure.

What changes when Weekdays in comparison is adjusted in the

Save Weekday bedtime and Weekday wake time unchanged and replace Weekdays in comparison once in the Bedtime Consistency and Social Jet-Lag Calculator. Evaluate the Weekdays in comparison component with breakdown values to identify a proportional or threshold effect.

How does Weekdays in comparison qualify the bedtime consistency and social jet-lag calculator headline?

The Bedtime Consistency and Social Jet-Lag Calculator headline compresses Weekday bedtime and Weekday wake time, so evaluate it with Weekdays in comparison and breakdown values. The Weekdays in comparison denominator then exposes rounding in the Bedtime Consistency and Social Jet-Lag Calculator.

What belongs in an audit note for the

Keep the Bedtime Consistency and Social Jet-Lag Calculator headline beside Weekend bedtime, Weekend wake time, and Weekdays in comparison, while Weekday bedtime and Weekday wake time identifies the run being compared. Add units and the calculation date.