Start with this short video, then scroll down for the full guide.
Why This Matters for Nursing: Healthcare uses 24-hour (military) time to avoid AM/PM confusion. "Give medication at 0800" is clearer than "8:00" — no chance of mixing up morning and evening. Time math is also critical for calculating IV rates and medication schedules.
| Conversion | Factor |
|---|---|
| 1 minute = | 60 seconds |
| 1 hour = | 60 minutes |
| 1 day = | 24 hours |
| 1 week = | 7 days |
Converting Standard to Military: - AM hours: Just add a leading zero if needed (9:00 AM = 0900) - 12:00 PM (noon): = 1200 - PM hours (1-11): Add 12 (3:00 PM = 1500) - 12:00 AM (midnight): = 0000 (or 2400)
Converting Military to Standard: - 0001-1159: It's AM (drop leading zero) - 1200: It's 12:00 PM (noon) - 1300-2359: Subtract 12, it's PM
Problem: Convert 7:30 AM to military time.
Step 1 — AM hours are simple. For any AM time (except midnight), just keep the same hour number and write it with 4 digits (add a leading zero if needed). 7 becomes 07.
Step 2 — Write the minutes. :30 stays :30. Put them together: 0730.
Answer: 0730 (said aloud: "oh-seven-thirty")
The worked examples and practice problems are the part that actually prepares you for the TEAS.
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