DOTY: Day of the Year

Day-of-year, UTC time, mission days, and satellite OBT tracking

DOTY (Day Of The Year) is a precision time-positioning app designed for engineers, satellite operators, mission planners, and anyone who needs accurate day-of-year tracking.

Instead of just showing dates, DOTY shows where today sits in the year — clearly and instantly — with professional UTC-based calculations and mission-ready tools.

CORE FEATURES

• Day of Year (DOY) counter (e.g., 028 / 365 or 366)
• Automatic leap year handling
• UTC time display
• Days remaining in year
• ISO week and Julian day
• Year progress indicator

MISSION MODE

Create mission profiles to track mission-day timelines separate from the calendar year.

• Mission day counter
• Mission start and end dates
• Mission elapsed time (MET)
• Multiple missions support

OBT OVERFLOW TRACKING

Built for satellite workflows.

• Define OBT overflow days
• Recurring overflow cycles
• Multiple overflow events
• Overflow notifications
• Mission-day based alerts

ALARMS & TIMERS

Never miss a critical event.

• UTC alarms
• Countdown timers
• Satellite arrival alerts
• Background notifications
• Floating active timer view

HOME SCREEN WIDGETS

Choose your preferred widget style.

• Big time widget
• Big day-of-year widget
• Balanced layout widget
• Widget gallery with previews
• Quick add to home screen

DESIGNED FOR CLARITY

• Clean, minimal interface
• Dark, space-inspired theme
• Large readable numbers
• Offline-first
• No account required
• No tracking

DOTY is built for precision, reliability, and fast time awareness — from mission control rooms to everyday planning.

Know exactly where you are in the year.