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Time Decimal

Convert times of day to the fraction of the day elapsed.

Each time of day represents a fraction of a 24-hour day. There are 86,400 seconds in a day (24 × 60 × 60), so the conversion is:

totalSeconds = hours × 3600 + minutes × 60 + seconds

percent = totalSeconds ÷ 86400

  • Total Seconds is the raw decimal value (e.g. 8:24:00 am gives 30,240).
  • % is the percentage of the day elapsed (e.g. 35%).
  • Value is that percentage rounded to a two-digit number, the form used by many geocaching puzzles.

For puzzles that pack coordinates into clock times, line up the resulting two-digit values and assemble them into a coordinate. The summary block under the results table shows the concatenated digits ready to read as DDM coordinates.

Accepted: 8:24:00 am, 14:24:00, 8:24 am, 08:24