28 Days Ago
Today is Friday, January 9, 2026.
28 days ago, it was Friday, December 12, 2025.
This is based on EST timezone (which we estimate as your local timezone).
Your Last 28 Days Breakdown
Every day counts differently. Here's how your 28 days have been divided:
Last 28 Days Calendar
See your time period at a glance with this calendar highlighting the past 28 days.
December 2025
| Sun | Mon | Tue | Wed | Thu | Fri | Sat |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | |
| 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 21 | 22 | 23 | 24 | 25 | 26 | 27 |
| 28 | 29 | 30 | 31 |
January 2026
| Sun | Mon | Tue | Wed | Thu | Fri | Sat |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||
| 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| 18 | 19 | 20 | 21 | 22 | 23 | 24 |
| 25 | 26 | 27 | 28 | 29 | 30 | 31 |
Calculate Other Time Periods
Need a different calculation than twenty eight days ago?
Use our calculator to find any past or future date based on your specific requirements.
In 28 Days the Average Person Has Spent...
Calculate in a Spreadsheet or with Code
Here's how to calculate a date twenty eight days ago using popular programming languages and tools:
=TODAY() - 28
// PHP
$pastDate = date('Y-m-d', strtotime('-28 days'));
echo $pastDate;
// JavaScript
const pastDate = new Date();
pastDate.setDate(pastDate.getDate() - 28);
console.log(pastDate.toISOString().split('T')[0]);
# Python
from datetime import datetime, timedelta
past_date = datetime.now() - timedelta(days=28)
print(past_date.strftime('%Y-%m-%d'))
// Java
import java.time.LocalDate;
public class DateCalculation {
public static void main(String[] args) {
LocalDate pastDate = LocalDate.now().minusDays(28);
System.out.println(pastDate);
}
}
-- SQL (MySQL) SELECT DATE_SUB(CURDATE(), INTERVAL 28 DAY) as past_date;
Frequently Asked Questions
How accurate is the 28 days ago calculation?
Our calculator provides exact day-by-day calculations, accounting for:
- Exact calendar days (including weekends)
- Business days (Monday through Friday)
- Month transitions
- Leap years when applicable
How many business days are in 28 days?
In the last 28 days there has been 21 business days (Monday-Friday) and 7 weekend days (Saturday-Sunday).
In general, any 28-day period typically contains 19-21 working days and 7-9 weekend days. This can vary depending on which day of the week the period starts and ends.
Last 28 Days Detailed Timeline
Track the journey through time with this detailed breakdown of your 28-day period:
| Date | Day Type | Timeline Position | Season | Moon Phase |
|---|---|---|---|---|
|
December 12, 2025
|
💼 Friday | Day 346, Week 50, Q4 | Winter | 🌕 Full Moon |
|
December 13, 2025
|
🙌 Saturday | Day 347, Week 50, Q4 | Winter | 🌕 Full Moon |
|
December 14, 2025
|
🙌 Sunday | Day 348, Week 50, Q4 | Winter | 🌕 Full Moon |
|
December 15, 2025
|
💼 Monday | Day 349, Week 51, Q4 | Winter | 🌖 Waning Gibbous |
|
December 16, 2025
|
💼 Tuesday | Day 350, Week 51, Q4 | Winter | 🌖 Waning Gibbous |
|
December 17, 2025
|
💼 Wednesday | Day 351, Week 51, Q4 | Winter | 🌖 Waning Gibbous |
|
December 18, 2025
|
💼 Thursday | Day 352, Week 51, Q4 | Winter | 🌖 Waning Gibbous |
|
December 19, 2025
|
💼 Friday | Day 353, Week 51, Q4 | Winter | 🌗 Last Quarter |
|
December 20, 2025
|
🙌 Saturday | Day 354, Week 51, Q4 | Winter | 🌗 Last Quarter |
|
December 21, 2025
|
🙌 Sunday | Day 355, Week 51, Q4 | Winter | 🌗 Last Quarter |
|
December 22, 2025
|
💼 Monday | Day 356, Week 52, Q4 | Winter | 🌗 Last Quarter |
|
December 23, 2025
|
💼 Tuesday | Day 357, Week 52, Q4 | Winter | 🌘 Waning Crescent |
|
December 24, 2025
|
💼 Wednesday | Day 358, Week 52, Q4 | Winter | 🌘 Waning Crescent |
|
December 25, 2025
|
💼 Thursday | Day 359, Week 52, Q4 | Winter | 🌘 Waning Crescent |
|
December 26, 2025
|
💼 Friday | Day 360, Week 52, Q4 | Winter | 🌑 New Moon |
|
December 27, 2025
|
🙌 Saturday | Day 361, Week 52, Q4 | Winter | 🌑 New Moon |
|
December 28, 2025
|
🙌 Sunday | Day 362, Week 52, Q4 | Winter | 🌑 New Moon |
|
December 29, 2025
|
💼 Monday | Day 363, Week 01, Q4 | Winter | 🌑 New Moon |
|
December 30, 2025
|
💼 Tuesday | Day 364, Week 01, Q4 | Winter | 🌒 Waxing Crescent |
|
December 31, 2025
|
💼 Wednesday | Day 365, Week 01, Q4 | Winter | 🌒 Waxing Crescent |
|
January 1, 2026
|
💼 Thursday | Day 1, Week 01, Q1 | Winter | 🌒 Waxing Crescent |
|
January 2, 2026
|
💼 Friday | Day 2, Week 01, Q1 | Winter | 🌒 Waxing Crescent |
|
January 3, 2026
|
🙌 Saturday | Day 3, Week 01, Q1 | Winter | 🌒 Waxing Crescent |
|
January 4, 2026
|
🙌 Sunday | Day 4, Week 01, Q1 | Winter | 🌒 Waxing Crescent |
|
January 5, 2026
|
💼 Monday | Day 5, Week 02, Q1 | Winter | 🌓 First Quarter |
|
January 6, 2026
|
💼 Tuesday | Day 6, Week 02, Q1 | Winter | 🌓 First Quarter |
|
January 7, 2026
|
💼 Wednesday | Day 7, Week 02, Q1 | Winter | 🌓 First Quarter |
|
January 8, 2026
|
💼 Thursday | Day 8, Week 02, Q1 | Winter | 🌓 First Quarter |
28 Days Ago Recap
Just 28 days ago, on Friday, December 12, 2025, the world kept spinning. Since then, your hair has grown about 0.392 inches, your nails around 0.336 inches, and you've blinked approximately 806,400 times.
The average person has breathed roughly 645,120 times, yawned about 560 times, and produced nearly 42.0 liters of saliva. Your blood has circulated through your entire body approximately 28,000 times, and your stomach has worked through about 56 pounds of food.
The Sun has fused 16,800,000,000 tons of hydrogen into helium, while our planet has traveled 44.8 million miles through space. Light from the Sun has taken 232 minutes to reach Earth each day, bringing us energy, warmth, and the rhythm of day and night.
In technological terms, approximately 9,800,000 tweets were posted each minute, 5,600,000 Instagram photos were shared each hour, and about 140,000,000,000 Google searches were performed by people around the world.
Breaking it down further, that's 672 hours, 40,320 minutes, or precisely 2,419,200 seconds since that Friday morning.